Removal of Methylene Blue from Aqueous Solutions by Magnetic Acrylic Acid-co-butyl Methacrylate
Randa
Ghonim
Polymer Materials Research Department, Institute of Advanced Technology and New Materials, City for
Scientific Research and Technological applications, New Borg El-Arab City, Alexandria- Egypt
author
Ahmed
Ghozlan
Leader for chemical industries and cosmetics company
author
Hamada
Abdel-Wahab
Chemistry Department, Faculty of Science, Al-Azhar University, Egypt
author
text
article
2020
eng
In this study, a polyacrylic acid-co-butyl methacrylate/Fe3O4 nanocomposite was In this study, a polyacrylic acid-co-butyl methacrylate/Fe3O4 nanocomposite was prepared using in-situ coprecipitation polymerization technique, for the adsorptive removal of methylene blue (MB) dye from industrial wastewater. Chemical structure of the prepared magnetic nanocomposite was confirmed using Fourier transform infrared spectroscopy (FTIR). Thermal properties were studied using thermal gravimetric analysis (TGA), while the morphological structure was examined using a scanning electron microscope (SEM). Different parameters affecting the adsorption process, such as contact time, pH, adsorbent dosage, agitation speed, and initial dye concentration, were also studied. This study indicated that the percentage removal of MB dye has decreased with increasing initial dye concentration while increased with raising the agitation speed from 100 to 300 rpm. Additionally, studying the pH profile of the dye solution shows that the highest MB removal percentage (98%) was recorded at pH 3.5. These results demonstrated that the prepared magnetic nanocomposite could be considered as a promising adsorbent for the removal of MB dye from industrial wastewater.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3179
3190
https://ejchem.journals.ekb.eg/article_86647_2907c1d4dc366b7431e37b78c94c763b.pdf
dx.doi.org/10.21608/ejchem.2020.21821.2300
Enhancing Electrical Conductivity Attributes of Knitted Polyester Fabrics Using ZnO Nano-particles
R. F.
El-Newashy
Clothing and Knitting Industrial Research Department, Textile Industries Research
Division, National Research Centre, 12622-Dokki, Cairo, Egypt
author
S.
Mowafi
Proteinic and Man-made Fibres Department, Textile Industries Research Division,
National Research Centre, 12622-Dokki, Cairo, Egypt.
author
M.
Abou Taleb
Proteinic and Man-made Fibres Department, Textile Industries Research Division,
National Research Centre, 12622-Dokki, Cairo, Egypt.
author
H.
El-Sayed
Proteinic and Man-made Fibres Department, Textile Industries Research Division,
National Research Centre, 12622-Dokki, Cairo, Egypt.
author
text
article
2020
eng
This work was adopted to enhance the electrical conductivity of knitted polyester fabrics byincorporation of zinc oxide nanoparticle (NPs) into the fibre vicinity. Five structures ofPIQUE knitted polyester fabric of variable loop length were treated with ZnO NPs usingexhaustion technique. The treated fabrics were sewn using two types of stitches: namely threethread overedge (504) and five thread full overedge (516). The comfort attributes of the treatedfabrics; Viz. electrical conductivity, air permeability, and water permeability were assessed.Physico-mechanical properties of the different treated and untreated fabrics were also evaluated.Atomic absorption spectrometry was used to trace the amounts of zinc ions incorporated onto thedifferent treated structures. The alteration in the functional groups of the modified samples wasmonitored by FTIR spectroscopy. Scanning electron microscopy coupled with energy dispersiveX-ray spectroscopy/elemental mapping were adopted to confirm the inclusion and distribution ofZnO NPs onto the modified polyester fabric. The treated polyester knitted fabrics showedenhanced electrical conductivity with improved comfort properties without adverse effect on theirperformance and appearance attributes.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3191
3198
https://ejchem.journals.ekb.eg/article_78940_916f872ad6400bc5556509cd387980cc.pdf
dx.doi.org/10.21608/ejchem.2020.24432.2460
Enhancement of Dyeability and Antibacterial Characteristics of Silk Fabrics using Chitosan Nano-Particles
Asmaa
shahin
National Research Centre
author
Safia
mahmoud
National Research Center
author
Heba
El-Hennawi
National Research Centre
author
Amira
zaher
National Research Center
author
text
article
2020
eng
The present work was carried out to study the effect of prepared chitosan nanoparticles (CNPs) on the dye ability of silk fabric dyed with mono and bi functional reactive dyes. In order to obtain the optimum condition of using nano chitosan the silk fabric was treated with different concentration of nano-chitosan using three different methods (a)pre-treatment,(b)one bath process and (c)post-treatment. The colour strength (K/S) and colour parameters of dyed silk samples were measured for each method. The change in silk fabric surface morphology after using nano chitosan was examined with SEM. The K/S results of silk dyed samples treated with nano chitosan solution were higher comparable to the untreated samples.furthermore nanochitosan exhibit superior behaviour as antibacterial agent against both gram-positive and negative bacteria .
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3199
3208
https://ejchem.journals.ekb.eg/article_76517_b059b924994e393a968ee86b7e959f99.pdf
dx.doi.org/10.21608/ejchem.2020.24522.2462
Enaminones-Assisted Synthesis of Disperse Dyes. Part 2: High Temperature Dyeing of Polyester Fabrics
Morsy
Elapasery
Dyeing, Printing and Auxiliaries Department, Textile Research Division, National Research Centre, Cairo 12622, Egypt
author
Fathy
Yassin
Department of Chemistry, Faculty of Science, Zagazig University, Egypt
author
Mohamed
Abd El-Azim
Department of Chemistry, Faculty of Science, Zagazig University, Egypt.
author
Mahmoud
Abdellatif
Department of Chemistry, Faculty of Science, Zagazig University, Egypt
author
Hamada
Mashaly
Dyeing, Printing and Auxiliaries Department, Textile Research Division, National Research Centre, Cairo 12622, Egypt
author
text
article
2020
eng
Some new disperse dyes has been prepared and used in dyeing polyester fabrics at a temperature of 130 °C and a study of the optimum conditions for the use of the dispersing agent. The relationship between the dye concentration used in dyeing polyester fabrics with dispersed dyes and the color strength K/S were studied using three different concentrations of dye weight. Finally, polyester fabrics dyed with disperse dyes have shown that they possess very good fastness against washing, perspiration and rubbing and acceptable fastness properties of light.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3209
3216
https://ejchem.journals.ekb.eg/article_72030_5f194de23e2a817342a5bfb41399ca62.pdf
dx.doi.org/10.21608/ejchem.2020.23393.2390
Evaluation of Calotropis procera fruits as a Bioadsorbent for Removing of Acid Red 73 dye from the Aqueous Solutions
hassan
el.adawi
Chemistry Department, Faculty of Science, AL-Azhar University, Cairo, 11884,
(EGYPT)
author
Abdulaziz Ali
Alomari
Chemistry Department, Faculty of Science and Arts, Mukhwah, Albaha University,
1988, (KSA).
author
text
article
2020
eng
acid red 73 dye is a colorant dyes is using in many dyeing processes and may causes manyharmful effects to aquatic life with lasting effects. So, it must be removed from aquaticenvironment, one of the most useful methods is the using of plants biomass in its removal.Therefore, both of raw andacid activated (with HCl) Calotropis procera fruits (CPF) was usedfor the adsorption of Acid red 73 (AR73) dye from an aqueous solution.Various parameters(including dye concentration,contact time, dose, temperature, and pH) were optimized to obtainthe maximum adsorption capacity.Surface morphology and surface functional groups of bothraw and modified CPF samples were investigated by scanning electron microscope (SEM) andfourier transformation infrared (FTIR). Among the adsorbents, HCl-CPF had more adsorptioncapacity (65%) than CPF (22.4%) at an initial concentration of 20 mg/L and at 30°C.Thethermodynamic parameters, such as the changes in enthalpy (ΔH°), entropy (ΔS°), and Gibbsfree energy (ΔG°), showed that the adsorption is exothermic, random and nonspontaneous athigh temperatures.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3217
3228
https://ejchem.journals.ekb.eg/article_89542_35776022569e0f372d99e9debd55539e.pdf
dx.doi.org/10.21608/ejchem.2020.23834.2415
Prevention and Treatment of Cancer with Alternative Anticancer Approach: Current Scenario
Archita
Roy
Dr. B. C. Roy College of Pharmacy and AHS, Durgapur -713206, West Bengal, India
author
Sudip
Mandal
Dr. B. C. Roy College of Pharmacy and AHS, Bidhannagar, Durgapur-713206, West Bengal, India
author
Mohmmed
Ramadan
National Research Center, 33 El Bohouth St, Dokki, Giza, Egypt
author
text
article
2020
eng
Cancer is a serious concern right away which severely affects the mankind. Recently, the centre of interest of pharmaceutical industry is to develop newer drug molecules with very less or no toxicity to prevent and cure this life-threatening disease. Nature is the origin of remedies for human. Natural therapeutic agents brought a great change in recent drug market, as these are simple, safer, eco-friendly, low-cost, and less toxic in respect to commonly using drugs. Natural anticancer agents are selective in their functions and targetfully act on tumor cells without having any effect on normal cells. Cancer is a complex phenomenon which requires many signaling pathways. Natural therapeutic agents are the appropriate candidates to develop anticancer drug on account of their pleiotropic actions on target events with diverse manners. In this review we have collected a basket, flooded with latest information (2010-2020) on prevention and treatment of cancer with several products from nature, such as phytohemical (artemisinin, parthenolide, thapsigargin, curcumin, resveratrol, quercetin, coumarin, calcitriol, capsaicin, fisetin, evodiamine, boswellic acid, betulinic acid, deoxyelephantopin), plant (Rosmarinus officinalis L., Aloe vera, Olea europaea), functional foods (pomegranate, mango, amla, garlic, ginger, broccoli, mushroom, green tea, coffee, honey), textile and marine product based on their mechanism of action.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3229
3245
https://ejchem.journals.ekb.eg/article_107790_984809d5c22012c64008a8ad948b0cfb.pdf
dx.doi.org/10.21608/ejchem.2020.36958.2764
Minimizing Pollution During Dyeing of Bio-Polished Cotton Fabric Using Eco-Friendly Microwave Technique
W.A.
El-sayed
Home Economics Department, Clothing and Textile Division, Faculty of Women for
Arts, Science, and Education, Ain Shams University, Cairo, Egypt
author
M. M.
El-Adawi
Home Economics Department, Clothing and Textile Division, Faculty of Women for
Arts, Science, and Education, Ain Shams University, Cairo, Egypt
author
N. S.
Ashour
Home Economics Department, Clothing and Textile Division, Faculty of Women for
Arts, Science, and Education, Ain Shams University, Cairo, Egypt
author
S. H.
Abdelrahman
Home Economics Department, Clothing and Textile Division, Faculty of Women for
Arts, Science, and Education, Ain Shams University, Cairo, Egypt
author
E. M. S.
Shaheen
Home Economics Department, Clothing and Textile Division, Faculty of Women for
Arts, Science, and Education, Ain Shams University, Cairo, Egypt
author
text
article
2020
eng
Minimizing pollution in textile industry is gaining much attention nowadays. Microwave irradiation technique is one of the best techniques used recently to reduce environmental pollution via saving time, energy, as well as cost. The present work concerned with comparison between two dyeing techniques; conventional and microwave irradiation; of bio-polished cotton fabric with reactive dyeing process. The effect of dye concentration, temperature, liquor ratio, as well as auxiliaries added on the dyability of bio-polished cotton fabrics, was studied. The optimal irradiation parameters were chosen with respect to the colour strength and wash fastness. Physico-mechanical and fastness properties as well as durability of the two techniques were evaluated. Microwave techniques showed the best results as the fabric thickness, crease recovery angle, the warp set the weft sett and wettability increased after enzymatical treatment and microwave dyeing.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3247
3258
https://ejchem.journals.ekb.eg/article_111083_7331884c8f62c1e98a25c30bdc590b61.pdf
dx.doi.org/10.21608/ejchem.2020.27950.2600
Utilization of Lanolin in Microwave-assisted Pigment Printing of Textiles
Nagla S.
El-Shemy
Dyeing, Printing, and Textile Auxiliaries Department, National Research Centre, El-
Buhouth St., 12611-Dokki, Giza, Egypt.
author
Nancy S.
El-Hawary
Dyeing, Printing, and Textile Auxiliaries Department, National Research Centre, El-
Buhouth St., 12611-Dokki, Giza, Egypt.
author
Karima
Haggag
Dyeing, Printing, and Textile Auxiliaries Department, National Research Centre, El-
Buhouth St., 12611-Dokki, Giza, Egypt.
author
Hosam
El-Sayed
Proteinic and Man-made Fibres Department, National Research Centre, El-Buhouth
St., 12611-Dokki, Giza, Egypt.
author
text
article
2020
eng
Proper utilization of wool grease which is usually discarded after scouring of raw wool fleece in many parts of the world is of prime importance from the environmental and economic point of views. In the present work,wool grease was extracted from coarse wool fleece using conventional heating or microwave irradiation. Different concentrations of lanolin was utilized as a binder in pigment printing of wool, polyester fabrics as well as polyester/wool (65/35) and polyester/cotton (65/35) blended fabrics using flat screen technique. Fixation of prints was brought about either by conventional heating or microwave irradiation. Extraction of lanolin as well as fixation of prints under the influence of microwave irradiation was carried out at different reaction parameters; Viz. concentration of reagent, reaction time and temperature, and microwave power. Colorimetric measurements; namely colour strength (K/S) and fastness properties (against washing, light, perspiration, and rubbing) were conducted. The wet contact angle, UPF, stiffness, and air permeability of the printed fabrics were also assessed and compared to those of the corresponding samples printed in presence of commercial binder instead of lanolin. The results of this study reveal that the colour strength and fastness properties of the fabrics printed using lanolin as a binder, whatever the adopted fixation method, is almost similar to those printed using commercial binder. Only the rubbing fastness of the printed fabrics was remarkably worse upon using lanolin as a binder in pigment printing of the said textile fabrics.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3259
3269
https://ejchem.journals.ekb.eg/article_89549_e89f6b5a55ac3124bcdffe741e051df1.pdf
dx.doi.org/10.21608/ejchem.2020.28300.2608
Surface Modification of Blended Fabrics by Silica Nanoparticles to Improve Their Printability
Madiha
al kashouty
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
Tarek
salem
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
Hanan
elsayad
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
Somia
Twaffiek
Faculty of Applied Arts, Helwan University, Cairo, Egypt
author
Shimaa
Elhadad
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
text
article
2020
eng
The sol-gel technique offers an effective way of modifying fabrics, and has many advantages. In this paper, silica nano particles in the solid form were prepared from TEOS precursor; further application of these silica nanoparticles to polyester ̸ wool, and polyester ̸ cotton blends as well as polyester and cotton fabrics is carried out. Improved fabrics printability, as well as acquiring antibacterial properties were achieved. The basic idea for using sol-gel technology to modify fabric blend surfaces in order to solve their coloration problems and to attain solid shades using a single set of dyes.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3271
3287
https://ejchem.journals.ekb.eg/article_82064_6347dcfe19db4f41edb59e8aa5c127eb.pdf
dx.doi.org/10.21608/ejchem.2020.24442.2465
Antimicrobial Finishing for Cotton Fabrics and its Blend Using Melia Azedarach Ethanol/ Water Extract Containing Printing Paste Formulation
sherif
hassan
faculty of applied art
Helwan university
author
Salah
SALEH
Professor and Head of textile chemistry Department, agriculture research center, cotton, research institute .
author
Jacklin
Abd thaloth
Textile Printing, dyeing and finishing - Faculty of Applied Arts, Hellwan uni.
author
Elsayed
Ismail
Textile engineer at the Egyptian Organization for Standardization and Quality
author
text
article
2020
eng
The purpose of the present study is to biosynthesis of ethanol extracts from The Ripe fruits of Melia azedarach plant to investigate the ecofriendly and economic efficient and apply this extract on cotton fabrics and its blend to impart antimicrobial efficacy by printing style under different concentration . Where the fabric samples were pre-treated with tannic acid which used as amordant . The Results of GC-MS analysis showed that the ethanol extract of M. azedarach contains 27 compounds and it is rich in many substances such as tannins, flavonoids and other phenolics compound , also results showed that the crude extract of Melia azedarach possess antimicrobial activity against Gram negative and Gram positive bacteria . The results of scanning electron microscope ( SEM) indicated that there is a difference in the surface shape of the treated and untreated fabrics. As well the treated fabrics showed good inhibitory activity against Gram positive bacteria with inhibition zones range from 7 to 12 mm and Gram negative one with inhibition zones range from 7 to 15 mm.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3289
2399
https://ejchem.journals.ekb.eg/article_76507_a6cf6490cc23afdb9e5e783b9bf0c421.pdf
dx.doi.org/10.21608/ejchem.2020.23108.2417
An Overview: Textile Surface Modification by Using Sol-gel Technology
Madiha
al kashouty
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
Hanan
elsayad
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
Somia
Twaffiek
Faculty of Applied Arts, Helwan University, Cairo, Egypt
author
Tarek
salem
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
Shimaa
Elhadad
Dyeing, Printing and Textile Auxiliaries Department, Textile Industries Research
Division, National Research Center, Dokki-12622, Cairo, Egypt
author
text
article
2020
eng
The sol-gel technique is a new technique which offers an effective way of modifying fabrics, and it has been proven to be simple, effective, and has many advantages. It is interesting to explore on the viability of using sol-gel technology to modify surfaces of various fabric blends.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3301
3311
https://ejchem.journals.ekb.eg/article_82203_dad778cd7f87b305b79b2960cdf768a7.pdf
dx.doi.org/10.21608/ejchem.2020.24441.2464
Effect of Enzymatic Treatment of Starch Gelatinized with Sodium Hydroxide
Sahar H.
Nassar
Textile Industries Research Division, National Research Centre, Cairo, Egypt
author
Somia
Tawfik
Faculty of Applied Arts, Helwan University, Cairo, Egypt
author
Sherif H.
Abd Elsalam
Faculty of Applied Arts, Helwan University, Cairo, Egypt
author
I.
Abd El-Thalouth
Textile Industries Research Division, National Research Centre, Cairo, Egypt
author
text
article
2020
eng
Different Kinds of starches were subjected to gelatinization under the action of sodium hydroxide solution at room temperature and treated with alpha-amylase enzyme in the gelatinized form. To achieve this goal, maize starch was subjected to gelatinization using sodium hydroxide at room temperature under different conditions. The latter comprise, starch concentration, sodium hydroxide concentration, pH value, time and temperature as well as the concentration of α-amylase enzyme. The modified starches were evaluated via measuring the solubility and the apparent viscosity at various rates of shear. The modified starches were evaluated as thickeners in printing wool fabrics with acid dye and polyester using disperse dye. The results of these investigations demonstrated that increasing the apparent viscosity by increasing starch concentration is expected. The apparent viscosity increases by increasing the amount of sodium hydroxide.Increasing of α-amylase enzyme concentration is accompanied by a decrease in the apparent viscosity.The most suitable pH for starch modification by enzyme was found at pH 7.The temperature highly influences the apparent viscosity of maize starch at any specific rate of shear. However 50◦C is the most suitable degree for modification of maize starch to obtain a suitable viscosity and cold water solubility and also avoid the higher decrease in the viscosity. The treated starches were evaluated via measuring the solubility and rheological properties.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3313
3326
https://ejchem.journals.ekb.eg/article_89548_0cab4543943386dd5c0903bc3ca22130.pdf
dx.doi.org/10.21608/ejchem.2020.27970.2607
Effect of Enzymatic Treatment of Starch Gelatinized with Urea
I.
Abd El-Thalouth
Textile Industries Research Division, National Research Centre, Cairo, Egypt
author
Somia
Tawfik
Faculty of Applied Arts, Helwan University, Cairo, Egypt.
author
Sherif H.
Abd Elsalam
Faculty of Applied Arts, Helwan University, Cairo, Egypt.
author
Sahar H.
Nassar
Textile Industries Research Division, National Research Centre, Cairo, Egypt
author
Ireni A.
Shehata
Faculty of Applied Arts, Helwan University, Cairo, Egypt.
author
text
article
2020
eng
The present work is undertaken with a view to discover the effect of enzymatic hydrolysis using α-amylase enzyme on different kinds of starches. This was done while starch was in the gelatinized form under the action of urea at room temperature. To achieve this goal, maize starch was subjected to gelatinization using urea at room temperature under different conditions. The latter comprise, starch concentration, urea concentration, pH value, time and temperature as well as the concentration of α-amylase enzyme. The modified starches were evaluated via measuring the solubility and the apparent viscosity at various rates of shear. The modified starches were evaluated as thickeners in printing wool fabrics with acid dye and polyester using disperse dye. The results of these investigations demonstrated that the concentration of starch increases from 30 to 40 to 50g%, the apparent viscosity increases regularly irrespective of the rate of shear. The apparent viscosity increases by increasing the amount of urea. Increasing of α-amylase enzyme concentration is accompanied by a decrease in the apparent viscosity at any specific rate of shear. The most suitable pH for starch modification by enzyme was found at pH 7.The temperature highly influences the apparent viscosity of maize starch at any specific rate of shear. However 80◦C can be considered as the optimum temperature in enzymatic modification of maize starch to obtain soluble starch which acquire a suitable viscosity. Generally speaking enzymatic treated starches give better results in direct printing when compared with Daico-thic or mypro gum.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3327
3342
https://ejchem.journals.ekb.eg/article_89547_971cb6fd25075ac78c29cc559f49ac83.pdf
dx.doi.org/10.21608/ejchem.2020.27969.2606
Towards Water-saving Textile Wet Processing. Part 1: Scouring and Dyeing
S.
Mowafi
Proteinic and Man-made Fibres Department, National Research Centre, El-33
Behouth St., 12622-Dokki, Giza, Egypt.
author
H.
Mashaly
Dyeing, Printing, and Textile Auxiliaries, Department, National Research Centre,
El-33 Behouth St., 12622-Dokki, Giza, Egypt.
author
H.
El-Sayed
Proteinic and Man-made Fibres Department, National Research Centre, El-33
Behouth St., 12622-Dokki, Giza, Egypt.
author
text
article
2020
eng
This work is devoted to try to reduce consumption of water during scouring and dyeing of wool, viscose, and polyester fabrics. This was achieved by scouring wool, viscose, and polyester fabrics by the carbonate salt of sodium, potassium, or ammonium using different material-to-liquor ratios. The scoured fabric was removed from the scouring bath, and the residual liquor was divided into three aliquots. The first aliquot was used directly for dyeing of scoured wool fabric with Acid Blue 193, scoured viscose fabric with Reactive Blue 19, and scoured polyester fabric with Disperse Red 56. The pH of the second aliquot was adjusted to pH 4.5 using dilute hydrochloric acid and then used for dyeing of the scoured fabric with the respective dyes. The third aliquot was adjusted to neutrality by using calcium chloride solution which resulted in precipitation of calcium carbonate; the supernatant of which was taken out of the bath and directly used for the dyeing process. The colour strength of the dyed fabrics was measured and compared to the corresponding conventionally scoured and dyed fabrics. The fastness properties of the dyed fabrics against light, washing, rubbing and perspiration were also assessed. Results of this study revealed that it is possible to use the residual scouring bath of wool, viscose, and polyester fabrics after being rendered acidic or neutral, for their dyeing successfully. Physico-mechanical properties of all scoured fabrics were measured.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3343
3353
https://ejchem.journals.ekb.eg/article_89546_2c36c2985eb71aa130c0cbd0c7fc28b3.pdf
dx.doi.org/10.21608/ejchem.2020.27952.2602
Flame Resistance of Cotton Fabrics and Their Natural Dyeing Using Plant Waste of Banana Pseudostem (BPS)
Salah M.
Saleh
Textile Chemistry Dept., Cotton Research Institute, Agriculture Research Center (ARC), Giza, Egypt.
author
Heba A.
Mohammed
Textile Chemistry Dept., Cotton Research Institute, Agriculture Research Center (ARC), Giza, Egypt.
author
text
article
2020
eng
The present study has demonstrated the flame retardancy effect of Banana pseudostem (BPS) as plant wastes at different concentrations on bleached and mercerized Egyptian cotton fabric made of Giza 90. Alkaline method was used to produce the extract BPS. The cotton fabric after the treatment was found to produce stable natural semi kaki color. Flame retardant properties of both the untreated and the treated cotton fabrics were analyzed in terms of limiting oxygen index (LOI), horizontal and vertical flammability. The control and the treated cotton fabrics were examined using FTIR, thermo-gravimetric analysis, mechanical properties, and color components analysis. The results revealed that, the treated cotton fabrics were found to have good flame retardant property of LOI at BPS concentration 10% compared to the control fabrics. In the vertical flammability test, the treated fabric showed flame for a few seconds and then got extinguished. In the horizontal flammability test, the treated fabric showed no flame, but was burning with a propagation rate of 7.5 mm/min, which was almost 10 times lower than that noted with the control fabric. The results revealed that, there was no significant degradation in mechanical strengths. Based on the results, the mechanisms of formation of natural color on the cotton fabrics using the proposed BPS treatments have been postulated.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3355
3366
https://ejchem.journals.ekb.eg/article_89544_44dce4ee757aabfbd96118af5a0bfe76.pdf
dx.doi.org/10.21608/ejchem.2020.27948.2599
Surface Modification of Polyester Fabric Using Microwave Irradiation to Minimize Pollution in Textile Industry via Optimizing Energy and Time
R. S.
Rizk
Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo,
Egypt.
author
W. A.
El Sayed
Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo,
Egypt.
author
N. S.
Ashour
Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo,
Egypt.
author
Omnia Kh.
Ahmed
Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo,
Egypt.
author
text
article
2020
eng
Polyester fabric was hydrolyzed by Sodium Hydroxideusing microwave technique as well as the conventional one, in order to enhance its wettability. Several factors were studied such as time, temperature, concentration of sodium hydroxide, liquor ratio and wet pick up. The treated and untreated fabricswerethen after-treated with zinc oxide. Antibacterialproperty, UPF as well as dyeability of the treated fabricswere evaluated. Microwave technique shows best results in all evaluation compared with the conventional technique.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3367
3380
https://ejchem.journals.ekb.eg/article_89545_9f41ae603569b283e6214d9c1190a8dd.pdf
dx.doi.org/10.21608/ejchem.2020.27949.2601
Kinetic and Thermodynamic Studies for the Efficient Removal of Methylene Blue Using Hordeum Murinum as a New Biosorbent
Saddam
Al-Mahmoud
Department of Chemistry, College of Education for Women, Tikrit University
author
text
article
2020
eng
In this work, Hordeum murinum as a sustainable and cost-effective biosorbent material is utilized without any further treatment to remove Methylene blue dye from aqueous solutions. The effects of various parameters including pH, biosorbent amount, reaction time, initial concentration, and temperature are investigated. The results show that 94% of Methylene blue is removed using the optimal adsorption conditions of pH 5.6, biosorbent dose of 0.1 gm, 60 min equilibrium contact time, 20 mg/L of initial dye concentration at a temperature of 25 °C. Experimental results reveal that the adsorption kinetics can have the best description by employing the pseudo-second order model. The spontaneous and exothermic nature of the adsorption process is indicated by the negative values of the Gibbs free energy change and the enthalpy change, respectively. These results reveal that Hordeum murinum exhibited excellent performance for the removal of Methylene blue from aqueous solutions, which can make it very interesting as an alternative and effective low-cost biosorbent material.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3381
3390
https://ejchem.journals.ekb.eg/article_86646_8b4b5ce820739763f56ee8c95904c6e2.pdf
dx.doi.org/10.21608/ejchem.2020.16008.1970
The Impact of Egyptian Thermophylic Cellulase on The Dyeability of Natural and Recovered Cellulosic Fabrics
Omaima
Allam
National Research Centre
author
Shaymaa
Ismail
National Research Center
author
Rehab
Abdelghaffar
National Research Centre
author
Hamada
Mashaly
National Research Centre
author
Amira
Hassan
National Research Center
author
text
article
2020
eng
Bioremediation using enzymes is an important tool in textile industry; therefore the goal of the present study is to subrogate the pretreatment of natural (cotton) and recovered (viscose) cellulosic fabrics with microbial acidothermophilic cellulase produced by the native Egyptian fungus Aspergillus terreus RS2. The produced enzyme was examined at two activity levels (10 and 20U/mL) in order to reduce the effluent load that was produced from scouring and bleaching processes and to upgrade a naturally adequate transaction for water and power economy. The effectiveness of the enzymatic pretreatment under the optimum conditions on raw, scoured and bleached cellulosic fabrics has been proved as the results indicated an increase in the color intensity of the treated fabrics in compare to the untreated one for different classes of reactive dyes based on Anthraquinones and Double azo. The fastness properties of the pretreated dyed fabrics were implemented. The contact angle for the pretreated cellulosic fabrics, tensile strength, Scanning electron microscopy and FTIR analyses were performed.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3391
3400
https://ejchem.journals.ekb.eg/article_78933_c230f95790773cf4be9b5c5db334192f.pdf
dx.doi.org/10.21608/ejchem.2020.24369.2463
Spectrophotometric Studies on The Removal of Some Metal Ions and Methylene Blue Dye from Their Aqueous Solutions Using New Absorbents
Manal
El-Sheikh
Pre-Treatment and Finishing of Cellulosic Fibres, Textile Research Division, National Research Centre, Egypt
author
Ghadeer
Almulhim
Al Jouf University, SA
author
Hanan
Alenazi
Al Jouf University, SA
author
Yasah
Al ruwailia
Al Jouf University, SA
author
Haya
Al ruwaili
Al Jouf University, SA
author
Tahani
Al enazi
Al Jouf University, SA
author
text
article
2020
eng
In the current work, carboxy methyl starch graft copolymerized with acrylamide (CMS-g-PAAm) and CMS-g-PAAm silver nanoparticles composite (CMS-g-PAAm-AgNPs) prepared in previous works were used as novel absorbents for the removal of Cu2+, Co2+, Ni2+ ions and methylene blue dye from their aqueous solutions. Reaction kinetics and % removal of the metal ions and methylene blue using CMS-g-PAAm and CMS-g-PAAm-AgNPs were studied. Metal ions and methylene blue removal were determined by measuring the absorbance of the colored solution of Cu2+, Co2+, Ni2+ ions and methylene blue dye before and after treatment with CMS-g-PAAm and CMS-g-PAAm-AgNPs using spectrophotometer. Results showed that the % removal of Cu++, Co++, and Ni++ is very high at the first 30 min then slowly increased. The % removal of ion for Cu++, Co++, and Ni++ reached up to 81.2%, 79.88, 77.97 respectively. Study also showed that the % of methylene blue removal using both CMS-g-PAAm-AgNPs and CMS-g-PAAm reached up to 99.7 and 99.33% respectively. The novel absorbents were found promising for use in waste-water treatments applications.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3401
3408
https://ejchem.journals.ekb.eg/article_82464_18e84613623c5b23df75be8d1d092da3.pdf
dx.doi.org/10.21608/ejchem.2020.27225.2566
Use of Sustainable Energy as a Heating Source to Improve Dyeability and Other Properties of Wool and Polyamide-6 Fabrics with Nano-Silica
Lamiaa
El-Gabry
NRC, Textile research division, proteinic and Man-made fibres departments
author
Nagla
Elshemy
Dyeing, printing and auxiliaries department, Textile research division, National research centre, Doki, Cairo, Egypt
author
Hanan
Badr Eldin
Dyeing, printing and auxiliaries department, Textile research division, National research centre, Doki, Cairo, Egypt
author
text
article
2020
eng
This study deals with the utilization of silicon dioxide nanoparticles (SiO2 NPs) to treatment of wool and polyamide 6 fabrics. The fabrics treated with different concentrations of SiO2 NPs (5- 20 g/l) using pad-dry- cure technique. The size of nano silicon dioxide particles measured with TEM. The surface morphology and surface chemical elements of treated and untreated fabrics were characterized through high-resolution Scanning Electron Microscopy (SEM) and Dispersive X-Ray spectroscopy (EDX), respectively. The untreated and treated wool and polyamide fabrics were characterized by FTIR. The effect of the treatment on dyability of both wool and polyamide 6 fabrics using different dyestuffs such as acid, basic and direct dyes is studied with applying innovation technique to save energy, water and time. For comparison, the same dyeing technique was carried out by using conventional heating technique. The colour strength and the fastness tests of the untreated and treated wool and polyamide 6 fabrics were evaluated. The effects of SiO2 NPs on the physical and multifunctional properties of the treated sample such as weight, thickness, UPF, antibacterial activity and moisture regain % were determined. The obtained results indicate that the optimization of dyeing process parameters as well as optimized treatment of both wool and polyamide fabrics with SiO2 NPs has a significant influence on the obtained shades and fastness properties.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3409
3424
https://ejchem.journals.ekb.eg/article_111084_ef2ebe4cde6b0388eb48790584e9fe33.pdf
dx.doi.org/10.21608/ejchem.2020.35459.2738
The Effect of Finishing Treatment by Aqueus Ginger Solution on Electrostatic and Thermal Insulation Properties of Medical Bandages
Mohmmed
Ramadan
Textile Research Division, National Research Centre (ID: 60014618), Egypt
author
Walaa
EL- Mohr
Home economics department (Clothes and Textile Branch) - Faculty of Specific Education - Tanta University
author
text
article
2020
eng
This research aims to study the effect of ginger solutionin reducing the electrostatic property and increasing the thermal insulation of the bandage while maintaining the functional properties of the bandage fabric.To achieve this goal, bandage fabrics consisting of 70% cotton and 30% polyamide were treated with ginger in different concentrations, (25 - 50 - 100%), There are some variables such as ginger solution concentration and number of bandage layers (1, 2 and 3) whose effect on the performance properties of bandage has been studied. Several tests were performed for these samples before and after treatment such as electrostatic charge value, thermal insulation value, air permeability, water permeability and square meter weight. The results showed that with an increase in the concentration of the treatment material and the number of layers, the value of thermal insulation increased and the value of the electrostatic charge decreased, with an unnoticeable effect on the other properties of the bandage. Thus the ginger-treated bandage can be used to treat patients with arthritis.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3425
3440
https://ejchem.journals.ekb.eg/article_109010_455198f0564c9e3b97d4f39389730195.pdf
dx.doi.org/10.21608/ejchem.2020.38602.2795
Improving Antibacterial and Ultraviolet Properties of Cotton Fabrics via Dual Effect of Nano-metal Oxide and Moringa oleifera Extract
Manal
El-bisi
National Research Centre (Scopus affiliation ID 60014618), Pre-treatment and
Finishing of Cellulosic Fibers Department, Textile Research Division, 33El-Behouth
St. (former El-Tahrir str.), Dokki, P.O. 12622, Giza, Egypt,
author
Radwa
Othman
National Research Centre (Scopus affiliation ID 60014618), Pre-treatment and
Finishing of Cellulosic Fibers Department, Textile Research Division, 33El-Behouth
St. (former El-Tahrir str.), Dokki, P.O. 12622, Giza, Egypt,
author
Fathy Ahmed
Yassin
Zagazig University Faculty of Science, Chemistry Department
author
text
article
2020
eng
Bleached cotton fabrics were pre-treated with moringa leaf extract as natural bioactive materials to impart the fabric dual antimicrobial and sun protective properties. The fabrics were the treated with TiO2NP and ZnONP separately with concentration 2%&1% respectivelyin presence of butane tetracarboxlyic acid as non-formaldehyde crosslinking agent by pad dry cure technique. The treated fabrics were evaluated via monitoring morphological changes of the fibers using scanning electron microscopy and electron diffraction X-ray (SEM&EDX), tensile strength, roughness, ultra violet factor (UPF) in addition to bioas-say of antimicrobial activity of the treated fabrics. Research output disclosed that the fabrics treated with moringa extract and then with titanium dioxide nanometal oxide powder show the best results.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3441
3451
https://ejchem.journals.ekb.eg/article_110434_0d5ebee89a580a72a68c7ed7c9defca4.pdf
dx.doi.org/10.21608/ejchem.2020.39534.2805
Influence The Addition of Fe2+ and H2o2 on Removal and Decolorization of Textile Dye (Dispersive Yellow 42 dye)
Rawaa
Alattar
Department of Chemistry, College of Science, University of Kerbala, Kerbala, Iraq
author
Hind
Saleh
Department of Chemistry, College of Science, University of Misan, Maysan, Iraq
author
Jassim
Al-Hilifi
Department of Chemistry, college of Science, University of Misan, Maysan, Iraq
author
Luma
Ahmed
Department of chemistry, College of science, University of Kerbala
author
text
article
2020
eng
This research compares the addition of some oxidant agents such as Fe2+, H2O2 and mixture from both to aqueous solution of dispersive yellow 42 dye, which regarded as an organic contaminant. This work performed during the dark reaction and photo reaction under artificial UV-A light (HPML -125 watt). In reality, the addition of the oxidant agents leaded to raise the light resistance of this dye to decolorize, this results can be used to increase the life time for textile materials which painted by this dye. The removal percentage without addition oxidant agent at 20 oC was decreased from 32.710 % to 21.445, 11.439 and 8.785% for addition Fe2+, H2O2 and mixing of both respectively. Moreover, the decolorization percentage for mention materials was depressed from 94.444 to 60.869, 4.163 and 16.044 respectively. The effect of temperature determined with chose Fe2+ as oxidant agent and compared with reaction without any addition, because the change is less compared with the other studied cases. The kinetic study of the photo-decolorization process of this dye demonstrated that the generated response is pseudo-first order. The Fenton and photo-Fenton improve the resistance of dye to decolorize during illuminated by light.The dye removal rates depress with the temperature increases from 288 K to 303 K; that due to the dark reaction is exothermic, nonspontaneous and obeys the physical adsorption depending on the values of enthalpy and free energy. In the contrast, the responsed of photodecolorization for this dye is found to be endothermic m non spontaneous and less random.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3453
3463
https://ejchem.journals.ekb.eg/article_77445_0bdd1f771f60da5cc4b231eec96b35d8.pdf
dx.doi.org/10.21608/ejchem.2020.23542.2400
Review in Textile Printing Technology
Meram
Abdelrahman
Textile Industries Research Division, National Research Centre, 33 El-Buhouth Street, Dokki, Cairo 12622, Egypt
author
Sahar
Wahab
National Research Centre, 33 El-Buhouth Street, Dokki, Cairo 12622, Egypt
author
Hamada
Mashaly
Dyeing, Printing and Auxiliaries Department, Textile Research Division, National Research Centre, Cairo 12622, Egypt
author
safya
Ali
Dyeing, Printing and Auxiliaries Department, Textile Industries Research Division, National Research Centre, Cairo 12622, Egypt
author
Dalia
Maamoun
Printing/Dyeing/Finishing Department, Faculty of Applied Arts, Helwan University, Cairo, Egypt
author
Tawfik
Khattab
Dyeing, Printing and Auxiliaries Department, Textile Research Division, National Research Centre, Cairo 12622, Egypt
author
text
article
2020
eng
Thickeners have been used as a significant component in textile printing pastes. They are characterized with high molecular weight, high viscosity in an aqueous medium, good storage, long hydration time consistent with other printing paste components and being colorless. They impart plasticity and stickiness to the print paste with the ability to introduce designs without bleeding. The major function of printing pastes is to hold, adhere and transfer the dyestuff onto the targeted fabric. There have been various well known synthetic and natural thickeners.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3465
3479
https://ejchem.journals.ekb.eg/article_76512_dd2fe509e2a71767ca4d6e0fe68dc6e7.pdf
dx.doi.org/10.21608/ejchem.2020.23726.2418
Ultraviolet Protection of Cotton Fabrics and Their Blends Using Natural Plant Extracts by Printing Style
sherif
hassan
faculty of applied art
Helwan university
author
Salah
SALEH
Professor and Head of textile chemistry Department, agriculture research center, cotton, research institute .
author
Elsayed
Ismail
Textile engineer at the Egyptian Organization for Standardization and Quality
author
Jacklin
Abd thaloth
Textile Printing, dyeing and finishing - Faculty of Applied Arts, Hellwan uni.
author
text
article
2020
eng
The purpose of the present study is to harness the natural plant extracts to print and treatment the cotton fabrics and its blends. This study reports the impart Ultra Violet protection factor (UPF) to woven fabrics such as cotton and its blend which printed with colorants of Melia azedarach extract. The results showed a difference in the functional groups between the printed and unprinted samples, which indicates that the new functional groups are specific to the treatment materials used in printing paste . The results also indicated that the UPF values for the printed samples are much higher than unprinted one, and some of these values are higher than the specifications limit for the UPF tests. Also results showed that the K/S values of printed samples are higher than unprinted samples, irrespective of the nature of the fabric used especially in the case of samples treated with citric acid as mordant in which it shows a direct increase directly proportional to the increased concentration. The results also indicated that the air permeability of the printed samples is lower than that of the unprinted samples as a result of the treatment operations. While under investigation Colour fastness to rubbing, washing, perspiration and light showed values were very good to excellent In all samples and at all concentrations.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3481
3489
https://ejchem.journals.ekb.eg/article_76513_37c8458b1acc9e691b71b409a63d8a11.pdf
dx.doi.org/10.21608/ejchem.2020.23842.2419
Comparative Performance Evaluation of Bleaching of Egyptian Cotton Fibers Using Different Bleaching Agents
shereen
bahlool
Agriculture Research Center, Cotton Research Institute, Giza, Egypt.
author
Hanaa
Saad Zaghlol
Cotton Research Institute- Agricultural Research Center- Egypt
author
text
article
2020
eng
The main objective of this study was to evaluate the potential of sodium percarbonate and sodium perborate utilization in cotton fiber bleaching instead of Hydrogen Peroxide and to compare the influence of these bleaching agents on performance of some Egyptian cotton varieties (G88, G90, G95, and G96). Bleaching efficiency is evaluated by the degree of whiteness, yellowness, micronaire value, Length, fiber strength and elongation percent. This research was conducted with bleaching using Oxygen bleaches comparable to the conventional bleaching agents such as Hydrogen Peroxide. Results showed that the bleaching with sodium Percarbonate (SPC) and sodium perborate (SPB) using three different concentrations brought an overall improvement in cotton fibers whiteness without decreasing the qualities of cotton fibers in comparison to hydrogen peroxide. This implies that these oxygen bleaches can replace the hydrogen peroxide. Moreover, oxygen bleaches are considered as good alternatives for other bleaches because of their economic and environmental impact as they are more stable and can be stored in a solid form. Besides, they can be active at lower temperatures.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3491
3502
https://ejchem.journals.ekb.eg/article_76514_b47fabc5ff3f8f5c1e216b429f77af56.pdf
dx.doi.org/10.21608/ejchem.2020.23843.2420
Enaminones-Assisted Synthesis of Disperse Dyes. Part 3: Dyebath Reuse and Biological Activities
Morsy
Elapasery
Dyeing, Printing and Auxiliaries Department, Textile Research Division, National Research Centre, Cairo 12622, Egypt
author
Fathy
Yassin
Department of Chemistry, Faculty of Science, Zagazig University, Egypt
author
Mahmoud
Abdellatif
Department of Chemistry, Faculty of Science, Zagazig University, Egypt
author
text
article
2020
eng
It is worth noting that industrial waste resulting from dyeing processes in the textile industry has a harmful impact on the environment. The majority of the industry uses disperse dyes and this colors produce effluent subsequent to coloring. In this study the dyebath of disperse dyeing at 100 or 130 °C utilized again without depleting them. Finally the biological activities of the synthesized disperse dyes like antimicrobial, antitoxicity and antioxidants were investigated
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3503
2315
https://ejchem.journals.ekb.eg/article_76515_2cc83cde0990ae482862df46edfbe972.pdf
dx.doi.org/10.21608/ejchem.2020.23904.2422
A Green Method for Preparation of Amino Acids Functionalized 2,3-Dialdehyde Cellulose
Atef
Kalmoush
Peptide Chemistry Department, National Research Centre, 33, El-Bohouth Str., P.O. 12622, Dokki, Giza, Egypt
author
Mohamed
El-Sakhawy
Cellulose and Paper Department, National Research Centre
author
Samir
Kamel
Cellulose and Paper Department, National Research Centre
author
Ahmed
Salama
Cellulose and Paper Department, National Research Center, Cairo, Egypt
author
Peter
Hesemann
Institut Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, CMOS, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
author
text
article
2020
eng
This study depicts the preparation of a new amino cellulose derivative of cellulose extracted from bagasse. 2,3-dialdehyde cellulose (DAC) with 60% degree of oxidation was prepared from cellulose by periodate oxidation. The obtained DAC was functionalized by Schiff base reaction with several amino acids up to 2.55% nitrogen content. Aliphatic/Aromatic, Mono/Dibasic, and Mono carboxylic/Dicarboxylic amino acids were investigated for the Schiff base reaction. FTIR spectra confirmed the successful introduction of the amino acids functional groups (carboxyl and amino groups). The successful interaction of amino acids with DAC composites were characterized and confirmed by elemental analysis, EDAX, TEM, SEM, XRD and TGA. A green method for preparation of amino acids functionalized 2,3-dialdehyde cellulose could be obtained in an efficient manner by controlling the amino acid type and degree of substitution while producing the DAC composites.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3517
3532
https://ejchem.journals.ekb.eg/article_76505_344c2a3b40b505b36f5c1a9223af7ddb.pdf
dx.doi.org/10.21608/ejchem.2020.22552.2341
Evaluation of the Mechanical and Functional Properties of Velvet Fabrics Treated with Fluorocarbon
Hafez
Hawas
Faculty of applied arts
author
El-Amir Mohamed
Mansour
Textile Printing, Dyeing & Finishing Department,Faculty of Applied Arts,Helwan University, Cairo, Egypt
author
Tawfic
Mahmoud
Faculty of arts Benha
author
text
article
2020
eng
Velvet fabrics are a type of pile weave structure, representing a significant percentage of the total upholstery fabric consumption. It is not only a famous in upholstery fabric but also is gaining importance in other textile end uses. The main idea of this research, depending on producing two warp pile fabrics with two different structures (1/2 V & 3/6 W) which used in upholstered furniture application and treated with fluorocarbon finishing agent to improve its properties to meet the functional purpose it is produced for. The results show that the warp pile structure and finishing treatment have a significantly affected on the mechanical and functional properties of produced fabrics, as tensile strength, air permeability, abrasion resistance, contact angle and water repellent. Addition to the results showed that the functional properties were durable even after 10 laundering cycles.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3533
3546
https://ejchem.journals.ekb.eg/article_74835_da031105c37fd781e23d097170d7f3d8.pdf
dx.doi.org/10.21608/ejchem.2020.23461.2391
Color Data and Antibacterial Properties of Smart Ag/polypyrrole- Nanocoated Cotton Fabric
Nahed
Ahmed
National Research Centre, Textile Research Division
author
text
article
2020
eng
Smart textiles are responsive fabrics for environmental changes, such as biological, electrical, thermal, mechanical, chemical, magnetic, optical, etc. It was envisioned that silver nanoparticles, in conjunction with polypyrrole, would render the cotton fabric colorful and antibacterial. Thus, cotton fabric was easily coated in situ while sliver nitrate gets reduced to silver (Ag), and pyrrole gets polymerized to polypyrrole (PPy). The Ag/PPy-nanocoated cotton fabric was characterized by ATR-FTIR and SEM-EDX, and the results obtained confirmed the structure of the coating layer in which the silver atomic content was 23.75%. The color strength of the nanocoated fabric was as high as 12.74. The color data indicated that the hue was dark gray, and the fastness properties revealed good to very good fastness properties. Antibacterial studies against antibiotic-resistant bacteria (Escherichia coli (gram-negative) and Staphylococcus aureus (gram-positive)) revealed the effectiveness of the Ag/PPy-nanocoated fabric and was even better than different antibiotics. The present work may pave the way for further development of medical textiles.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3547
3555
https://ejchem.journals.ekb.eg/article_72031_b5b70db560340fed6366cc6d205a072d.pdf
dx.doi.org/10.21608/ejchem.2020.23617.2405
Miniemulsion of Nanoencapsulated Dye for Highly Efficient Polyester Dying
Galal
El-gemeie
Department of Chemistry, Faculty of Science, Helwan University
author
maher
Helal
Department of Chemistry, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt.
author
Saber
Ibrahim
National Research Centre
author
hamada
mashaly
national research centre
author
Soha
El-Namoury
Department of Chemistry, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt.
author
text
article
2020
eng
In this work dispersed red- 153 dye was converted to nanoscale using mini emulsion polymerization The particle size and zeta potential was investigated by dynamic light scattering. Dyeing of polyester fabrics was carried out to coated and non-coated polyester fabric before dying process in the temperature range 50-135 ℃ and compared with the polyester fabrics coated and non-coated before dying process with the same dyes in normal size by detecting their k\s values. Kinetic study for the dying process was carried out for the nano and normal dye and different fastness properties (washing, light and rubbing) for all dyed fabric were carried out.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3557
3566
https://ejchem.journals.ekb.eg/article_74837_f9401e738941a0ac597543ccea2b5b1d.pdf
dx.doi.org/10.21608/ejchem.2020.24373.2449
A Novel Method for The Preparation of Conductive Methyl Cellulose-Silver Nanoparticles-Polyaniline-Nanocomposite
Manal
El-Sheikh
Pre-Treatment and Finishing of Cellulosic Fibres, Textile Research Division, National Research Centre, Egypt
author
Amal
Al-Enezy
Jouf University
author
Fatema
El-Enezy
Jouf University
author
Dalil
Ashammri
Jouf University
author
Fatema
El-Enezy
Jouf University
author
Waad
Alrowili
Jouf University
author
text
article
2020
eng
A novel green method for the synthesis of conductive nanocomposite -using silver nitrate, methyl cellulose (MC), glycerol, and aniline- was adopted. Here, silver nitrate was used as a precursor, methyl cellulose as both reducing and capping agent, glycerol as a co-reducing and ductility agent and water as solvent. While silver nitrate oxidizes aniline to polyaniline, it is reduced to silver nanoparticles. Doing so, both conductive polyaniline and conductive silver nanoparticle were in-situ synthesized via the formation of methyl cellulose- silver-polyaniline nanocomposite. Reproducibility of the nanocomposite revealed that the synthesis process is consistent. The nanocomposite film was characterized by FTIR, SEM, EDAX, XRD, and conductivity. XRD pattern showed poly crystallinity. TEM of the colloidal solution showed different particle shapes of AgNPs with size from 4-36 nm and d-spacing of 0.22 nm. SAED exhibits ring pattern with bright spots displaying polycrystallinity. Nanocomposite film, coated glass, cotton and polyester fabrics showed promising conductivity.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
63
v.
9
no.
2020
3567
3582
https://ejchem.journals.ekb.eg/article_82067_afe351ceb4a7314075d4ffe4c12ed279.pdf
dx.doi.org/10.21608/ejchem.2020.27264.2568