@article { author = {Sarhan, Afaf}, title = {Characterization of Chitosan and Polyethylene glycol Blend Film}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {405-412}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.11668.1743}, abstract = {In this work, chitosan-polyethylene glycol (Cs/PEG) blend films with different mass ratios have been synthesized utilizing simple blending and casting technique. Molecular structure, electronic transitions and surface morphology of the developed blends have been inspected utilizing a series of Fourier Transform Infrared (FTIR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, scanning electron microscopy (SEM). Moreover, both of the microhardness and swelling ability of the blends with different mass ratios have been evaluated. Both of UV-Vis and FTIR results postulates the presence of a distinct sort of interaction between both of chitosan (Cs) and polyethylene glycol (PEG) which could emanate from the newly formed intermolecular hydrogen bonds between Cs and PEG. It was also found that increasing PEG mass ratio in the blend results in increasing the value of the direct bandgap. SEM micrographs of the blend revealed changing the surface morphology of chitosan after the addition of PEG.}, keywords = {Chitosan,polyethylene glycol,band gap,hardness,swelling}, url = {https://ejchem.journals.ekb.eg/article_32496.html}, eprint = {https://ejchem.journals.ekb.eg/article_32496_287eef8122c789b8cc0c77a628a6e242.pdf} } @article { author = {Demehin, Abidemi and Oladipo, Mary and Semire, Banjo}, title = {Synthesis, Spectroscopic, Antibacterial and Antioxidant Activities of Pd(Ii) Mixed-Ligand Complexes Containing Tridentate Schiff Bases}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {413-426}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.12319.1766}, abstract = {Pd(II) complexes of the form [PdLNH3] (where L = N-salicylidene-o-aminophenol (L1), N-(5-methoxysalicylidene-o-aminophenol) (L2) and N-(2-hydroxy-1-naphthalidene)-o-aminophenol) (L3) containing ammonia and ONO tridentate Schiff bases were synthesized. These complexes were characterized by elemental analysis, infrared, ultraviolet-visible, proton and carbon-13 spectroscopies. The NMR spectra showed that the Schiff bases coordinated to the palladium(II) ion through the two deprotonated phenolic oxygen and azomethine nitrogen atoms. The presence of ammonia molecules in these complexes were indicated by the IR and 1H NMR spectra. The spectral data suggested a square planar geometry for the complexes. The biological studies revealed that the complexes displayed better antibacterial and antioxidant activities than the parent Schiff bases.}, keywords = {Schiff base,complex,Palladium(II) ion,Antibacterial,antioxidant}, url = {https://ejchem.journals.ekb.eg/article_37681.html}, eprint = {https://ejchem.journals.ekb.eg/article_37681_71fb2d530df3a29215234ba9f5374cf3.pdf} } @article { author = {S.K, Makokola and RIPANDA, ASHA and MIRAJI, Hosein}, title = {Quantitative Investigation of Potential Contaminants of Emerging Concern in Dodoma City: A Focus at Swaswa Wastewater Stabilization Ponds}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {427-436}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.11764.1772}, abstract = {Abstract Effluents released from wastewater stabilization ponds are re-used for irrigation while sludge is directly applied to agricultural lands as potential fertilizer. However, some treatment schemes are less efficient on the treatment, and not designed for removal of contaminants of emerging concern (CEC). Thus, the current study investigated the occurrence of CEC and physicochemical characteristics of Swaswa wastewater stabilization ponds (SWWSP). Sample partitioning followed by full scan mode GC/MS analysis for screening of CEC was adapted. It was observed that both influent and effluent from SWWSP had a significant amount of CEC such as metronidazole in the range of 0.065-0.104 ppm. It was further observed that physicochemical analysis before and after partition had insignificant differences among EC, salinity, pH, ammonium, and TDS. Nevertheless, turbidity and DO were significantly affected by the partitioning process. The presence of metronidazole poses an unclear environmental threat that requires immediate intervention since this chemical and other CEC have no local and international guidelines and do not fall under routine monitoring activities.}, keywords = {Swaswa,Contaminants Of Emerging Concern,Metronidazole,physical parameters,Chemical Parameter,Wastewater Stabilization Ponds}, url = {https://ejchem.journals.ekb.eg/article_53286.html}, eprint = {https://ejchem.journals.ekb.eg/article_53286_70a0ed47222ce50ab6091f19123532c5.pdf} } @article { author = {Hosny, Rasha and Fathy, Mahmoud and Abdelraheem, O.H. and Zayed, mohamed}, title = {Utilization of Cross-Linked Chitosan/ ACTF Biocomposite for Softening Hard Water: Optimization by Adsorption Modeling}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {437-456}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.12589.1780}, abstract = {In this study cross-linked biocomposite with a high adsorption capacity was prepared by incorporating amorphous carbon thin film (ACTF); synthesized from rice straw by catalytic acid spray method; into the chitosan biopolymeric matrix by microwave irradiation precipitation technique. The new technique improves the polymeric cross-linking effect between ACTF and chitosan without catalyst and does not affect the spatial structure of chitosan. The physicochemical properties of the resulting biocomposite were evaluated by FTIR, SEM, XRD, Raman. The chitosan/ACTF biocomposite analyses refer to the presence of cave-shaped pores, high electron density and ion exchange active sites on internal and external surfaces in addition to high thermal stability. The adsorption study summarizes the potential of novel chitosan/ACTF biocomposite for the removal of Ca2+ and Ba2+ from water by batch adsorption. Freundlich isotherm model was best fitted to equilibrium data as well as the pseudo-second-order kinetic model was best fitted to adsorption kinetic data. Thermodynamic parameters (ΔG, ΔH, and ΔS) suggested the exothermic nature of Ca2+ and Ba2+ adsorption. The removal efficiency for Ca2+ and Ba2+ were 80% and 87.85 % at initial concentration of 100 mg/l, respectively. The results indicated that the chitosan/ACTF biocomposite has a high adsorption capacity and excellent water compatibility.}, keywords = {Chitosan/ACTF biocomposite,microwave,Water treatment,water softening, Adsorption of Ca2+ and Ba2+ ions,Adsorption models,Adsorption kinetic}, url = {https://ejchem.journals.ekb.eg/article_51230.html}, eprint = {https://ejchem.journals.ekb.eg/article_51230_aaff3345e9c92e94145cc19c63a085c9.pdf} } @article { author = {Farag, Sohair and Ibrahim, Hassan and Amr, Ahmed and Asker, Mohsen and El-shafie, Amira}, title = {Preparation and Characterization of Ion Exchanger Based on Bacterial Cellulose for Heavy Metal Cation Removal}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {457-465}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.12622.1787}, abstract = {bacterial cellulose was prepared in our laboratory by using agriculture wastes. Egyptian bacterial cellulose was isolated from rotten apple. Modification of the prepared bacterial cellulose vis esterification reaction was performed by using succinic anhydride to create active carboxyl groups to be used as ion exchanger. Heavy metal ions such as Cu (II), Zn (II) and Hg (II) ions were used for evaluation the ion exchanger power of the modified bacterial cellulose. The prepared ion exchanger was characterized by using FT-IR spectroscopy and scanning electron microscope (SEM) imaging before and after metal ion absorption. In addition, the absorption and desorption cycles of the ion exchanger were studied. The results shown that the maximum absorption capacity percent of the prepared exchanger for Cu (II), Zn (II) and Hg (II) ions were found to be 81.8, 79.5 and 78.1% respectively.}, keywords = {bacterial cellulose,absorption capacities,reusability,Egyptian bacteria and heavy metal cation}, url = {https://ejchem.journals.ekb.eg/article_35315.html}, eprint = {https://ejchem.journals.ekb.eg/article_35315_51260deced0e0bff444df23e08a3f878.pdf} } @article { author = {El-Gabry, Lamiaa and Abo Hayes, Mohamed and Abou El-Kheir, Amira and Elgory, Zienab}, title = {Physical and Mechanical Properties of Treated Acrylic Fabrics Using Nano-Bentonite}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {467-489}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.13214.1820}, abstract = {Abstract The acrylic fabrics were treated with different concentrations of nano-bentonite (nano clay) using pad-dry cure technique in presence of sodium polyacrylate as a resin. Mechanical and Physical properties of treated acrylic fabrics such as tensile strength and elongation %, bending length thickness, weight, abrasion resistance, pilling resistance, air permeability and electrostatic charge were studied. The substantively of the treated fabrics in terms of dye exhaustion % towards basic dyes as well as washing fastness were studied. The effect of treatment and dyeing on performance properties of garments were evaluated by radar chart. To know the effect of treatments on the acrylic fabric properties, analysis of variance; ANOVA and t-Test have been applied.}, keywords = {Acrylic fabrics,Nano-Bentonite,dyeing,mechanical,Physical properties and ANOVA}, url = {https://ejchem.journals.ekb.eg/article_43930.html}, eprint = {https://ejchem.journals.ekb.eg/article_43930_e13fe0453b5d184551501622e6c234b2.pdf} } @article { author = {Abbas, Rafaat and Al-Balakocy, Naser and Khalil, E. M and Shalaby, Samy}, title = {Preparation of Nylon-6 Textile Materials for Special Applications Part1: Polymerization of 2-Methacryloxy Ethyl Trimethyl Ammonium Chloride with Nylon-6 Nonwoven Fabric Using K2S2O8 As Initiator}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {491-503}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.13236.1824}, abstract = {In the present work, a novel method was designed to develop an efficient and generally applicable technique for the creation of quaternary ammonium groups in nylon-6 macromolecules via polymerization of 2-methacryloxy ethyltrimethyl ammonium chloride (VQAs) in the presence of nylon-6 nonwoven fabrics using potassium persulphate (K2S2O8) as initiator. In addition factors affecting the extent and rate of polymerization (Rp) were investigated and the apparent activation energy was calculated. The reaction mechanism was suggested. Characterization of the grafted with PVQAs Nylon-6 nonwoven fabrics was investigated by X-ray, SEM, and FT-IR.}, keywords = {Nonwoven nylon-6 fabric,grafting,VQAs,PVQAs}, url = {https://ejchem.journals.ekb.eg/article_35314.html}, eprint = {https://ejchem.journals.ekb.eg/article_35314_4bb1aa770af917524d33c73faf929bcc.pdf} } @article { author = {Hamza, Asmaa and Kalmouch, Atef and El-Mowafi, Shaima and Rabie, Abdel gawad and Zewail, Mohamed}, title = {Synthesis of Some Analogues of Polymyxin E1 Antibiotic Using Automated Solid Phase Peptide Synthesis Assisted With Microwave Irradiation}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {505-522}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.13547.1839}, abstract = {Five analogues of Polymyxin E1 antibiotic were synthesized via Fmoc- solid phase peptide synthesis (SPPS) strategy using Biotage® Initiator+Alstra™ microwave peptide synthesizer. The aim of this work is to study the importance of the cyclization conditions of the lactam ring on the purity and yield of the final compounds. For this purpose, replacing L-Thr10 with L-Asp allowed the application of different cyclization methodologies. In all analogues, the Dab5,8,9 residues were replaced with Arg, while the Dab4 residue involved in lactam cyclization was replaced with Lys. Modification of the linear tripeptide tail was applied to two of the analogues. The obtained compounds were characterized with different spectroscopic techniques and will be tested for their antimicrobial activity.}, keywords = {Amino acids,Polymyxin E1,Automated Solid Phase Peptide Synthesis,Microwave irradiation,Fmoc- strategy}, url = {https://ejchem.journals.ekb.eg/article_39770.html}, eprint = {https://ejchem.journals.ekb.eg/article_39770_64776f9072958fe863ae34f6e9c0cce4.pdf} } @article { author = {Ghosh, Pronoy and Dey, Shishir and Ara, Mousummath and Karim, Kaykobad and Islam, A.B.M. Nazmul}, title = {A Review on Synthesis and Versatile Applications of Some Selected Schiff Bases with Their Transition Metal Complexes}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {523-547}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.13741.1852}, abstract = {Schiff base ligands and their transition metal complexes have covered a large field in chemistry that is being noticed. Schiff base ligands are viewed as special ligands since they are easily prepared by condensation reaction between aldehyde derivatives and amines. However they have simple preparation method; but their versatile applications make it unique compound in coordination chemistry, analytical chemistry, catalysis, pharmaceutical chemistry etc. The biological activities (e.g. antimicrobial, antitumour, antioxidant, anti-inflammatory, anticancer, antifungal, analgesic etc.) of Schiff bases and their complexes have been widely studied. This review is ornately pronounced the synthesis and versatile applications of some Schiff bases with their transition metal complexes.}, keywords = {Schiff bases,Metal complexes,Coordination chemistry,Biological Activity}, url = {https://ejchem.journals.ekb.eg/article_49685.html}, eprint = {https://ejchem.journals.ekb.eg/article_49685_40dab43f04bbe37641f7c741a7e3f6cc.pdf} } @article { author = {Helaly, Fahima M. and Khalaf, Aman I. and El-Nashar, Doaa and Salem, Samaa R. and Rozik, Nehad N. and Soliman, Adelmohsen M.}, title = {Evaluation of Synthesized Starch Cellulose Acetate Coacrylate and Nanoclay Holding Drugs}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {549-562}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.13963.1863}, abstract = {5-fluorouracil (5-FU), doxorubicin (DOX), and chlorambucil (CA) are functional drugs to destroy cancer cells in individuals with different carcinoma. The slow release profile is an optimistic technique and controls the drug release over a long time. This study is based on the incorporation of the drug on the nano-sized clay into polymeric host-carrier. The polymeric material based on potato starch cellulose acetate compound copolymerized with the acrylic acid monomer (SCACA) by a free-radical mechanism. The main aim of the represented study is to increase the drug efficiency for long period stability and simultaneously modifying drug delivery technologies with nano-clay (modified sodium bentonite (MSB)). The prepared drug delivery carrier was characterized by Fourier transform infrared spectroscopy (FT-IR). The evaluation of equilibrium swelling ratios (Q) for the SCACA without and with modified bentonite (0.05 and 2%) depict that greater modified clay content gave the lower Q value of the prepared polymer. The release rate was investigated in aqueous media of different pH values and measured spectrophotometrically. It was found that the release rate depends on the pH of the aqueous media in addition to the content of clay used in the polymeric modification. The modified polymer/ nano-clay drug carrier has been also evaluated as an antiproliferative agent against human liver cancer cell line (HEPG2). The results show that, 5-FU gave the highest growth inhibition potency from 54:48% followed by CA which gave 37:46% , while DOX showed the lowest growth inhibition donated 41:29% for all days exposure . This may due to the release of 5- FU is more than CA and Dox., but all drugs have a promising results.}, keywords = {Drug delivery,slow release,5-Fluorouracil,Doxorubicin,Chlorambucil}, url = {https://ejchem.journals.ekb.eg/article_43920.html}, eprint = {https://ejchem.journals.ekb.eg/article_43920_6a0dc746de6501261cc9c1815edb8150.pdf} } @article { author = {Putri, Reza and Safni, Safni and Jamarun, Novesar and Septiani, Upita and Kim, Moon-Kyung and Zoh, Kyung-duk}, title = {Kinetics studies on photodegradation of methyl orange in the presence of C-N-codoped TiO2 catalyst}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {563-575}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.14543.1883}, abstract = {This work investigated the photodegradation of azo dye, methyl orange, without and with the addition of C-N-codoped TiO2 catalyst using a visible halogen-lamp as a light source. C-N-codoped TiO2 was prepared by free-organic solvent peroxo sol-gel method. The effects of initial dye concentration, catalyst dosage, and pH solution on the photodegradation of methyl orange were studied. Photodegradation process for methyl orange solution at acidic condition showed high removal percentage. 5 mg L-1 methyl orange achieved color removal until 94% for 180 min irradiation in photodegradation process with the presence of C-N-codoped TiO2 catalyst, and approximately 70% TOC removed as the results of mineralization process. The kinetics reaction rate of photodegradation of methyl orange dye with the addition of C-N-codoped TiO2 followed pseudo-first order represented by Langmuir-Hinshelwood model, the kinetics constant of photodegradation became higher by decreasing the initial concentration of methyl orange. Three organic byproducts of methyl orange formed during photodegradation process was identified by LC-MS/MS system then degradation pathway of methyl orange photodegradation in the presence of C-N-codoped TiO2 catalyst was proposed.}, keywords = {Methyl orange,Photodegradation,C-N-codoped TiO2,degradation-pathway}, url = {https://ejchem.journals.ekb.eg/article_53220.html}, eprint = {https://ejchem.journals.ekb.eg/article_53220_8d12bc5757be8caaf4dc76ab49308c3e.pdf} } @article { author = {Hayder, Noor and Habeeb, Majeed and Hashim, Ahmed}, title = {Structural, Optical and Dielectric Properties of (PS- In2O3/ ZnCoFe2O4) Nanocomposites}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {577-592}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.14646.1887}, abstract = {The (PS-In2O3/ ZnCoFe2O4) nanocomposites have been prepared by using solution casting method. The structural, optical and dielectric properties of (PS-In2O3/ ZnCoFe2O4) nanocomposites have been studied to use it for different optoelectronics applications. The structural properties include FTIR, optical microscope and SEM. The results of optical properties for (PS-In2O3/ ZnCoFe2O4) nanocomposites showed that the absorbance, absorption coefficient, refractive index, extinction coefficient, dielectric constants and optical conductivity of (PS-In2O3) nanocomposites were increased with the increase in ZnCoFe2O4 nanoparticles concentrations while the transmittance and energy band gap were decreased with the increase of the ZnCoFe2O4 nanoparticles concentrations. The(PS-In2O3/ ZnCoFe2O4) nanocomposites have high absorbance in the UV-region. The results of dielectric properties showed that the dielectric constant, dielectric loss and A.C electrical conductivity of (PS-In2O3) nanocomposites increase with increase in ZnCoFe2O4 nanoparticles concentrations. The dielectric constant and dielectric loss decrease while the electrical conductivity increases with an increase in frequency.}, keywords = {polystyrene,Nanocomposites,Optical properties,dielectric,ZnCoFe2O4}, url = {https://ejchem.journals.ekb.eg/article_51883.html}, eprint = {https://ejchem.journals.ekb.eg/article_51883_c0148cc3de44bb5fcfb3959baa2505dc.pdf} } @article { author = {Kamel, Samir and El-Sakhawy, Mohamed and Anis, Badawi and Tohamy, Hebat-Allah S.}, title = {Graphene’s Structure, Synthesis, and Characterization; a brief review}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {593-608}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.15173.1919}, abstract = {In 2004, Andrei Geim and Kostya Novoselov used a simple technique to separate graphene layer from graphite. They were awarded the Nobel Prize in Physics in 2010. After this, the publications of graphene have been increasing year after year and have emerged as the most popular topic in the research field which indicates the importance of graphene research. Due to unique properties of graphene, it can be considered as promising material for various applications in the fields of physics, chemistry, material science and engineering, and biology. Consequently, this review will focus on using of biomass and other wastes as precursor material for graphene preparation. We hope it could be of any help to people who are interested in this field. The future outlook of graphene is also considered.}, keywords = {Graphene,graphite,Carbon Allotropes}, url = {https://ejchem.journals.ekb.eg/article_51892.html}, eprint = {https://ejchem.journals.ekb.eg/article_51892_b9ae68491ff6db0ac59da6011629c527.pdf} } @article { author = {Syrmanova, Kulash and Agabekova, Aktolkyn and Sakibayeva, Saule and Kovaleva, Anastassiya and Botashev, Yersultan and Kaldybekova, Zhanat and Bayzhanova, Sholpan}, title = {Physical-Mechanical Properties Research of Paint Materials on the Basis of Petroleum Bitumen}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {609-616}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.15174.1925}, abstract = {The article is devoted to the study of obtaining and study of physical and mechanical properties of paint materials on the basis of domestic petroleum bitumen. The expansion of the fields of application of bituminous materials is becoming more relevant due to the methods of regulation and physico-mechanical and adhesive-strength properties. The study of physical and mechanical properties of bituminous paint materials showed that water absorption changes in almost 3.5 times (from 0.03% to 0.11%), and their viability in the studied temperature range remains sufficient for the application of several layers of film from the prepared compositions. At the same time, all of them far exceed the known compositions in terms of impact strength and the magnitude of water absorption. Heat resistance of coatings does not reduce. And its value is within the permissible limits of temperatures used in technological processes.}, keywords = {Oil bitumen,paint materials,viscosity,Water Absorption,swelling,Strength,adhesion}, url = {https://ejchem.journals.ekb.eg/article_53681.html}, eprint = {https://ejchem.journals.ekb.eg/article_53681_a0a00d5f3a031fd6a24f695cfc4769e8.pdf} } @article { author = {Subramani, Arul and T, SENTHILNATHAN}, title = {Preparation, Characterization of Mg and Al co-doped ZnO nanoparticles and its application in congo red dye remediation}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {617-625}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.15825.1957}, abstract = {A simple co-precipitation method at normal temperature was used to prepare Mg and Al co-doped ZnO nanoparticles. The structure and chemical properties of synthesized nanoparticles were characterized by various techniques such as XRD, FTIR, SEM-EDX, UV-Visible Spectroscopy and AFM, whereas the photo-catalysis study of Congo red (CR) was performed by UV/VIS spectrophotometry. The XRD results exhibited that Mg, Al co-doped ZnO nanoparticles possess hexagonal wurtzite structure. The SEM analysis suggested varying nano morphology of synthesized nanoparticles and the purity of the sample was checked by EDX analysis. Mg, Al co-doped ZnO nanoparticles were subjected for the photo-degradation of congored dye (CR) in aqueous medium under UV-light irradiation. The photo-degradation study revealed that the Mg, Al co-doped ZnO nanoparticles is a promising substance for the hazardous ecological remediation.}, keywords = {ZnO nanoparticles,Soft-chemical method,Congored,Photodegradation}, url = {https://ejchem.journals.ekb.eg/article_53683.html}, eprint = {https://ejchem.journals.ekb.eg/article_53683_bb7fbdfe0cb9d9725c5db10f932e78b4.pdf} } @article { author = {Hebeish, Ali and Abdelrahman, Amal and Nassar, Sahar and Elsayad, Hanan and Elshemy, Nagla}, title = {Utilization of the Combined Effect of Ultrasound Waves and Sodium metaperiodate in Preparation of Oxidized Galactomannan Fenugreek Gum for Medical and Other Purposes}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {627-644}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.17500.2075}, abstract = {A new oxidation system was developed for synthesis of oxidized galactomannan fenugreek gum (GMFG). The system is based on subjecting the (GMFG) to the combined effects of sonication and sodium metaperiodate (SMPI) oxidation under a variety of conditions. Variables studied include SMPI concentration and duration as well as pH and temperature of the treatment (synthesis) conditions. The as synthesized GMFG, that is, the oxidized GMFG samples were submitted to analysis whereby the carboxyl and carbonyl groups in addition to apparent viscosity and rheological properties were monitored. Results obtained signify that SMPI concentration, pH, temperature and duration of synthesis act in favor of carboxyl content, the latter increases by increasing the magnitude of the said variables. The reverse is the case with the carbonyl content and residual SMPI, i.e., the carbonyl and residual SMPI decreases by increasing the parameters controlling the synthesis conditions. Accordingly, the most appropriate conditions for synthesis of the oxidized GMFG under investigation refers to SMPI concentration of 0.5 gm/5 gm GMFG for a duration of 30 min while keeping the pH at 3 and the temperature at 50°C. It was also observed that the oxidized GMFG is quite stable for storing time up to two weeks; opposite to the non-oxidized GMFG which becomes mostly after only one day. It was further realized that sizing of cotton fabric with oxidized GMFG displays antibacterial activity against G+ bacteria and G- bacteria but with the certainty that bacterial of G+ bacteria is greater than that of G- bacteria. Furthermore, GMFG exhibits higher solubility and lower apparent viscosity than does its non-oxidized mate, indicating easier handling and removal of the oxidized GMFG. Indeed, the new methodology, outlined herein for the synthesis and micro chemical characterization of oxidized GMFG sound simpler and easier to perform than other oxidation methodologies. This together with energy and time-saving would advocate current research outputs as environment-friendly methodology for production of GMFG for use in medical and other purposes.}, keywords = {Sodium metaperiodate,sizing,Ultrasonic wave,Galactomannan Fenugreek gum}, url = {https://ejchem.journals.ekb.eg/article_52506.html}, eprint = {https://ejchem.journals.ekb.eg/article_52506_364199b1e8fb649ce9db1fee54ab2ee8.pdf} } @article { author = {Haroun, Ahmed and Ayoob, Fathallah and Nashy, El-Shahat and Mohamed, Ola and Rabie, Abdel-Gawad}, title = {Sol-Gel preparation and In vitro kinetic Release Study of Albendazole-Immobilized MWCNTs}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {645-654}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.16915.2031}, abstract = {This study aims at preparation and characterization of novel drug delivery system based on functionalized multi-walled carbon nanotubes (MWCNTs) with tetraethyl orthosilicate (TEOS) using sol-gel technique, in presence of albendazole (ABZ) which used as a drug model. The prepared materials were characterized using Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), particle size distribution analysis using dynamic light scattering (DLS) technique and thermogravimetric analysis (TGA). In vitro kinetic release study of the immobilized ABZ was carried out using enzyme-free simulated gastric fluid (SGF) at pH 2.5 and 37ºC as well as by using the different mathematical models (zero order, first order and higuchi). Moreover, in vitro cytotoxic effect on the human normal fibroblast cell line (BHK) using SRB assay was also investigated. The results indicated that FTIR, TGA and particle size analysis of the prepared materials illustrating the successful immobilization of ABZ onto the functionalized MWCNTs. Besides, TEM images showed that the immobilized ABZ onto oxidized MWCNTs had agglomerated fibers without damage. Moreover, in vitro cytotoxic study revealed that the immobilized ABZ had low toxic effect on BHK cell line in comparison with the free drug. The cumulative ABZ released resulted in a biphasic release behavior with rapid initial burst phase.}, keywords = {albendazole,MWCNTs,sol-gel technique,in vitro kinetics release,Cytotoxicity}, url = {https://ejchem.journals.ekb.eg/article_52508.html}, eprint = {https://ejchem.journals.ekb.eg/article_52508_d34edf9e221e43870de5b49a1295c6bc.pdf} } @article { author = {Ibrahim, Hassan and Aly, Amal and Taha, Ghada and Ibrahim, Hassan}, title = {Production of Antibacterial Cotton Fabrics via Green Treatment with Nontoxic Natural Biopolymer Gelatin}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {655-669}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.16972.2040}, abstract = {Herein we used gelatin, which is an organic, non-toxic, safe and inexpensive substance as antibacterial material for cotton fabrics. There are some studies deals with the topic of finishing of textile materials with gelatin, its antibacterial, antioxidant and anti-fungal activity and its used as bio-material for textiles finishing but these studies neglect the effect of gelatin antibacterial itself which increase our attention to study the antibacterial effect of gelatin itself without any harmful side effects. Pad-dry-cure method was used for cotton fabric which was treated with gelatin in the presence of ammonium dihydrogen phosphate as a catalyst and dimethyloldihydroxyethelyene urea as a cross linker. Factors affecting this treatment were studied. Fourier Transform Infrared spectroscopy (FTIR), physico-mechanical properties, thermal gravimetric analysis and scanning electron microscope analysis were used to characterize the treated cotton fabrics. Disk diffusion method used to assessment antibacterial activity of the treated fabrics. Cytotoxicity of gelatin compared with. ciprofloxacin in viable A549 cells was evaluates by using MTT Results shows that treated cotton fabrics show excellent antibacterial activity towards tested bacteria and there is no observed toxic effects on mammalian cells so that gelatin can be used as safe antibacterial finishing agents of cotton fabrics.}, keywords = {gelatin,Antibacterial activity,modification,Cotton Fabrics,Cytotoxicity,green treatment}, url = {https://ejchem.journals.ekb.eg/article_54180.html}, eprint = {https://ejchem.journals.ekb.eg/article_54180_5c7a40edf410217131516c225b9d11bb.pdf} } @article { author = {Habeeb, Majeed and Hashim, Ahmed and Hayder, Noor}, title = {Structural and Optical Properties of Novel (PS-Cr2O3/ ZnCoFe2O4) Nanocomposites For UV and Microwave Shielding}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {697-708}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.12439.1774}, abstract = {The (PS-Cr2O3/ ZnCoFe2O4) nanocomposites have been fabricated by solution casting method with different weight percentages of Cr2O3 nanoparticles and ZnCoFe2O4 are (0,2,4,6 and 8) wt.% for UV and microwave shielding applications.. The structural and optical of (PS-Cr2O3/ ZnCoFe2O4) nanocomposites have been studied. The structural properties include Fourier transform infrared spectroscopy (FTIR). The results of structural properties for spectroscopy (FTIR) showed shift in peak position as well as the change in shape and intensity compared with pure polystyrene. The results of optical properties for (PS-Cr2O3/ZnCoFe2O4) nanocomposites showed that the absorbance, absorption coefficient, dielectric constants and optical conductivity of polystyrene were increased with the increase in Cr2O3 nanoparticles concentrations while the transmittance and energy band gap were decreased with the increase of the Cr2O3 nanoparticles concentrations. The (PS-Cr2O3/ZnCoFe2O4) nanocomposites have high absorbance in the UV-region. The results of structural and optical properties showed that the (PS-Cr2O3/ ZnCoFe2O4) nanocomposites may be used for UV and microwave shielding.}, keywords = {polystyrene,absorbance,refractive index,microwave,Nanocomposites}, url = {https://ejchem.journals.ekb.eg/article_59999.html}, eprint = {https://ejchem.journals.ekb.eg/article_59999_022e0ea6d41ac6373f95916350cef2df.pdf} } @article { author = {Habeeb, Majeed and Hashim, Ahmed and Hayder, Noor}, title = {Fabrication of (PS-Cr2O3/ ZnCoFe2O4) Nanocomposites and Studying their Dielectric and Fluorescence Properties for IR Sensors}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {709-717}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.13333.1832}, abstract = {In present work, study of dielectric and fluorescence properties of polystyrene (PS)- chromium oxide (Cr2O3) and polystyrene- chromium oxide doped by zinc cobalt iron oxides nanocomposites have been investigated. The samples have been prepared by adding ZnCoFe2O4 nanoparticles concentrations to the (PS-Cr2O3) nanocomposites by different weight percentages are (0, 2,4,6 and 8) wt.%. The results showed that the dielectric constant, dielectric loss and A.C electrical conductivity of (PS-Cr2O3) nanocomposites increase with an increase in ZnCoFe2O4 nanoparticles concentrations. The dielectric constant and dielectric loss decrease while the electrical conductivity increases with an increase in frequency. The results of dielectric and fluorescence properties showed that the (PS-Cr2O3/ZnCoFe2O4) nanocomposites can be used in different optoelectronics applications.}, keywords = {Nanocomposites,Fluorescence,ZnCoFe2O4,polystyrene,optoelectronics}, url = {https://ejchem.journals.ekb.eg/article_60000.html}, eprint = {https://ejchem.journals.ekb.eg/article_60000_000220cadd8094fe2e9ca00ce527a363.pdf} } @article { author = {Jebur, Qayssar and Hashim, Ahmed and Habeeb, Majeed}, title = {Structural, A.C electrical and Optical properties of (Polyvinyl alcohol–Polyethylene Oxide–Aluminum Oxide) Nanocomposites for Piezoelectric Devices}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {719-734}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.14847.1900}, abstract = {There needs to study of structural, electrical and optical properties of overlapping materials to determine their suitability for electronic, industrial and solar cell applications. Polymer blends and nanocomposites gained considerable importance for researchers and scientists. In addition to; they have entered into a wide range of electronic and industrial applications. So in this paper, it will make preparation a new kind of (polyvinyl alcohol– polyethylene oxide– aluminum oxide) nanocomposites with different concentrations of aluminum oxide nanoparticles. From the results, it’s noted that the dielectric constant of (PVA-PEO) blend is increased by increasing concentrations ofAl2O3NPs and applied load at 100Hz.The dielectric loss of (PVA-PEO) blend is increased by increasing concentrations of Al2O3NPsas well as with low percentage with increasing echanical stress at 100Hz.AC electrical conductivity of (PVA-PEO) blend is increased with increasing of Al2O3NPsconcentrations.The optical measurements are shown that the absorbance of (PVA-PEO-Al2O3) nanocomposites is increased by increasing the percentage weight of Al2O3NPs. The indirect energy gap (Eg) of (PVA-PEO) blend decreases with increasing of concentrations of Al2O3NPs. The optical constants as absorption coefficient, extinction coefficient, refractive index, real and imaginary dielectric constants of nanocomposites are a variation with increasing of Al2O3NPs concentrations.}, keywords = {Polymer blends,mechanical stress,aluminum oxide,Energy Gap,applied load}, url = {https://ejchem.journals.ekb.eg/article_60001.html}, eprint = {https://ejchem.journals.ekb.eg/article_60001_1b27b3d0725d07a3f60648a49ad0c169.pdf} } @article { author = {Hashim, Ahmed and Habeeb, Majeed and Jebur, Qayssar}, title = {Structural, Dielectric and Optical properties for (Polyvinyl Alcohol–Polyethylene Oxide- Manganese Oxide) Nanocomposites}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {735-749}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.14849.1901}, abstract = {Due to the scientific, industrial, electrical and medical importance, it was necessary to study the properties of overlapping nanocomposites. So it gained the attention and directed scientists and researchers in the study of its structure and electrical characteristics and other characteristics. So, In the present work, (polyvinyl alcohol- polyethylene oxide- manganese oxide nanoparticles) nanocomposites have been prepared with different concentration of blend and MnO2 nanoparticles. The manganese oxide nanoparticles were added to (PVA-PEO) blend by weight percentages are (2, 4 and 6) wt.%. .The optical microscope images indicate that the manganese oxide nanoparticles additive distribution was homogeneous in the (PVA-PEO) blend. FT-IR indicate that no change on chemical structures between the (PVA-PEO) blend and manganese oxide nanoparticles additives. The dielectric properties of nanocomposites were studied.The results showed that the dielectric constant, dielectric loss and electrical conductivity of (PVA-PEO) blend are increased with the increase in concentrations of manganese oxide nanoparticles. The dielectric constant and dielectric loss decrease while the AC electrical conductivity increases with the increase in frequency of applied electric field. Optical measurements are showed the absorbance of(PVA-PEO-MnO2) nanocomposites is increased with increase of the concentrations of MnO2NPs.With increasing of the concentrations of manganese oxide nanoparticles, the indirect energy gap (Eg) of (PVA-PEO) blend will be decreased. And by increasing of the weight percentages of manganese oxide nanoparticles,the optical constants as absorption coefficient, extinction coefficient, refractive index, real and imaginary dielectric constants of nanocomposites are varied.}, keywords = {MnO2NPs,Manganese oxide,Energy Gap,Nanoparticles,polymer blend}, url = {https://ejchem.journals.ekb.eg/article_60002.html}, eprint = {https://ejchem.journals.ekb.eg/article_60002_642c5cdb66830b68322bee2faea4a161.pdf} } @article { author = {Ismaiel, Elsaid and Abd El-Latif, Hekma and Mohammed, Hagar and Abd El Fattah, May and Rashed, Laila and Abdel-Wahhab, Nossad}, title = {Modulation of Nephrotoxicity Induced by Gentamicin with Bone Marrow Mesenchymal Stem Cells and Moringa Oleifera Extract}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {751-763}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.18347.2129}, abstract = {The study was undertaken to evaluate the protective effect of bone marrow mesenchymal stem cells (BM-MSCs) and Moringa oleifera extract (MOE) against gentamicin (GN)-induced nephrotoxicity in male albino rats. Thirty two adult male rats were divided into four groups including the control group, the group injected i.p with a single dose of GN (100 mg/kg b.w), the group treated orally with MOE (400 mg/kg b.w) for 6 days then injected with a single dose of GN and the group was injected with a single dose of BM-MSCs (5x105cells) by tail vein then injected with GN. At the end of experiment blood and kidney tissue samples were collected for estimation of different biochemical parameters. The results recorded a significant increase in BUN, serum KIM-1, cystatin C, creatinine, sodium and renal MDA accompanied with a significant decrease in serum calcium, renal GSH, SOD and CAT in GN alone-treated group as compared to control group. Co administration of MOE or BM-MSCs before GN injection improved all above parameters when compared with GN administered group. It could be concluded that MOE and BM-MSCs have a therapeutic and protective action against AKI induced by GN administration which manifested by lowering kidney markers and MDA contents and elevation in antioxidant profile.}, keywords = {Gentamycin,Nephrotoxicity,Bone marrow mesenchymal stem cells,Moringa oleifera}, url = {https://ejchem.journals.ekb.eg/article_60627.html}, eprint = {https://ejchem.journals.ekb.eg/article_60627_e00668e4ee3e18a5751241ee0259809c.pdf} } @article { author = {. Farag, Reem and El-saied, Hend}, title = {Green modification of waste cotton surface fabric by (2-acrylamide-2-methyl propane sulfonic acid, AMPS) and nano magnetite particles}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {765-784}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.12017.1759}, abstract = {The aim of this study is of great importance from the point of view of environmental studies. A green polymer containing specific functional groups with the ability to absorb high dosages of contaminated dyes & heavy metals from the wastewater was achieved. The surface properties of the waste cotton tissues were improved through its surface modification by graft polymerization using γ-radiation 60Co to acquire new properties such as hydrophilic or hydrophobic character based on the chemical structure of the used monomer. The nucleophiles surface cotton fiber modification was done by introducing an anionic monomer (2-acrylamide-2-methyl propane sulfonic acid, AMPS) and nano magnetite particles to easily facilitate separation of toxic substances. Factors influencing the grafting such as monomer concentration, radiation dose were studied. The structure surface properties of the grafted fabric were characterized by XRD, SEM, TGA, and IR. The results obtained show high and green removal efficiency of Cd(II), Co(II) and cationic dyes (methylene blue) from wastewater.}, keywords = {Waste cotton,Cationic dyes,Graft polymerization,γ-radiation 60Co,Nano magnetite particles}, url = {https://ejchem.journals.ekb.eg/article_60630.html}, eprint = {https://ejchem.journals.ekb.eg/article_60630_840d683a3d700a3cf7f1997611610917.pdf} } @article { author = {Tamilselvi, D and Velmani, N. and Rathidevi, K.}, title = {Electrical Conductivity Studies of Zinc Oxide, Nickel Doped Zinc Oxide Poly (O-Toluidine) Nanocomposite Using Chemical Oxidative Polymerization}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {785-795}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.14744.1897}, abstract = {Nanocomposite semiconductor material comprising Zinc oxide (ZnO), Nickel doped Zinc oxide and Poly(o-toluidine) polymeric composites were synthesized in two stage synthesis process. Solgel technique is adopted in the material synthesis of semiconductor particles of ZnO and Ni/ZnO (NZO), as well a proven technique of chemical oxidation of o-toluidine is attempted to prepare the semiconductor polymeric composites (ZPOT, NZPOT) and pure POT. The synthesized polymeric composites were characterized by (UV-Visible, XRD, SEM, FT-IR and TGA) spectroscopic studies. The addition of semiconductor material into the o-toluidine polymer resulted in a crystalline shape was confirmed from SEM image. Incorporation of metal oxide into polymeric composites showed a significant difference in the conductivity properties which were observed from DC conductivity studies.}, keywords = {Poly(o-toluidine),semiconductor material,two-stage synthesis,Conductivity studies}, url = {https://ejchem.journals.ekb.eg/article_62860.html}, eprint = {https://ejchem.journals.ekb.eg/article_62860_6b07f45c583ca04e4d2d87cc92c5870f.pdf} } @article { author = {Ali, I. Othman and El-Molla, Mohamed}, title = {Synthesis of Zinc oxide and Silver/ Zinc oxide Nanocomposite for Production of Antimicrobial Textiles}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {797-817}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.17392.2083}, abstract = {The zinc oxide nanoparticles were prepared by using Co-precipitation method and synthesis of Ag nanoparticles embedded in zinc oxide based on the reaction of silver nitrate with zinc oxide in one-step, after that these compounds were directly applied on to the 100% cotton woven fabric using a printing paste containing these compounds. These compounds are fixed onto cotton fabrics by dry with a low temperature and then thermo fixed method. The synthetized zinc oxide and / or silver/ zinc oxide were studied to prove its structure using various techniques such as X-ray, AFM analyses, IR spectra, the scanning electron microscopy (SEM) ….etc. Blends mixing calculation indicted the distribution of ZnO through CMC more favorable than Ag. Molecular dynamic simulation demonstrated that H-bond and electrostatic effect between nanoparticle and CMC should be the main driving forces to make nanoparticle molecules be adsorbed on the CMC and have slow-release properties in water or in water environment. Moreover, the antibacterial activity of printed cotton fabrics with, either synthetized zinc oxide and / or silver/ zinc oxide against, Staphylococcus aureus and Escherichia coli was evaluated. Docking study was carried out to indicate interaction behavior of sample with DNA grays of microorganism. Docking study showed that, the hydrophilicity of the sample due to presence nanoparticles, which was the circular key for inhibiting microorganism. The novelty of this work was arisen from its ability to fit the requirements of economic feasibility of medical textile.}, keywords = {Nanoparticles,Zinc Oxide,Cotton Fabrics,silver zinc oxide,antimicrobial textiles,docking simulation}, url = {https://ejchem.journals.ekb.eg/article_63518.html}, eprint = {https://ejchem.journals.ekb.eg/article_63518_3e911e5a6981cddeb7f8c833e3d9a6f5.pdf} } @article { author = {A. Mousa, Abdalla. and Youssef, Yehia and Abd El Moteleb, Khalid and Wasfy, Ashraf}, title = {One-bath One-stage Dyeing Process of Polyamide/polyester Blend Fabric Using Carbocyclic Vat Dyes}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {819-830}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.19575.2189}, abstract = {The dyeing behavior of selected both carbocyclic and heterocyclic vat dyes on polyamide PA and polyester PET fabrics have been examined. Factors affecting dyeability such as sodium hydrosulphite concentration, dyeing temperature and dye concentration were also studied. It was found that color strength (K/S) values of the carbocyclic vat dyes on PA and PET are high, which confirms the usefulness of these dyes for dyeing PA and PET fabrics in a neutral medium (acid leuco) at the specific temperature 120°C with very good fastness properties. However, K/S values obtained using heterocyclic vat dyes are very low compared with those obtained using carbocyclic vat dyes. The results indicate the possibility of using carbocyclic vat dyes for the one-bath and one-stage dyeing of PA/PET blend fabric with very good fastness properties.}, keywords = {Blends dyeing,one-bath dyeing process,vat dyeing,vat dyeing of polyamide/polyester blend fabric}, url = {https://ejchem.journals.ekb.eg/article_63530.html}, eprint = {https://ejchem.journals.ekb.eg/article_63530_a9c3cc7907822dc5bbfeb97debac6e72.pdf} } @article { author = {Ahmed, Shaimaa and Elsherei, Moshera and Salah El Dine, Riham and Eltomy, Sayed}, title = {Phytoconstituents, Hepatoprotective, and Antioxidant Activities of Euphorbia Cooperi N. E. Br.}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {831-840}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.20992.2252}, abstract = {Exploring novel and effective therapies against liver damage with antioxidant activity is a point worth studying. The present study was aimed to evaluate the hepatoprotective and antioxidant activities of Euphorbia cooperi N. E. Br. aerial parts in paracetamol-induced hepatotoxicity mice and isolates its bioactive constituents. Our findings suggest for the potential antioxidant and hepatoprotective action of the n-butanol fraction of the plant as significantly (p < 0.05) prevented the increased serum marker enzymes AST, ALT and bilirubin levels, decreased hepatic MDA and recovered GSH levels. Chromatographic separation of n-butanol fraction led to isolation of seven compounds namely, Gallic acid, Bervifolin carboxylic acid, Kaempferol-3-O-ß-D-rutinoside, Corilagin, 3, 3'-dimethoxy ellagic acid, 3, 4, 4'-trimethoxy ellagic acid and Ellagic acid.The structure of isolated compounds was elucidated by physical and spectroscopic analysis and by comparison with the literature data. These compounds isolated for the first time from Euphorbia cooperi N. E. Br.}, keywords = {Euphorbia cooperi,Hepatoprotective,antioxidant,Corilagin}, url = {https://ejchem.journals.ekb.eg/article_66899.html}, eprint = {https://ejchem.journals.ekb.eg/article_66899_4c31175a92ca9bcbbe35e80f63479c8e.pdf} } @article { author = {Kotb, Rehab}, title = {Augmented Application of Modified Fabrics for Producing Multi-functional Fashionable Apparel Using Khayamiya Heritage}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {841-855}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2020.20540.2231}, abstract = {End-uses applications of finished and modified textile materials are divers ranging from basic clothes to technical and industrial ones. Apparel products have multiple functions that started from primary protection, insurance, graceful of fashion to enhancement and sustainability of the quality of life. Application of functionally finished fabrics for intended end uses may be a challenge in the apparel design process that produces a special product with specific requirements. Producing such apparel items integrates and transfers the flat textile material to the fashion design process and the three-dimensional final product. Recently, the essential need oh human to wear has changed with time, due to the new lifestyle, needs, priorities and people's awareness. The aim of this study is applying the multifunctional finished cotton and silk fabrics to produce multifunctional apparel products that integrate the functional apparel design process considering the fashionable and upscale concepts. In addition to emerging of novel trends and technologies in the textile finishing field and different applications. As well as using Egyptian Khayamiya heritage to promote, maintain and develop an effective and traditional handicraft technique.}, keywords = {Multi-finishing,UV protection,Anti-odor,Functional apparel,Khayamiya}, url = {https://ejchem.journals.ekb.eg/article_68325.html}, eprint = {https://ejchem.journals.ekb.eg/article_68325_94b8d6fbd08aed0b9b9b158bae88a051.pdf} } @article { author = {Shaarawy, Sahar}, title = {A review on the Development of Innovative Capabilities in the Textile Finishing of Natural Fibers}, journal = {Egyptian Journal of Chemistry}, volume = {62}, number = {Special Issue (Part 2) Innovation in Chemistry}, pages = {857-579}, year = {2019}, publisher = {National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT}, issn = {0449-2285}, eissn = {2357-0245}, doi = {10.21608/ejchem.2019.19009.2169}, abstract = {Here in focus on the nano technology and biotechnology as new technique knock for textile multifunctional finishing process with highly effective and recent research concentrate and restrict on using this promising technology concomitant also advanced highly effective tools namely sonication, plasma, microwave for finding out how to reduce conventional techniques utilities. Nanotechnology is revolutionizing the way in which the functional properties are imparted to the textile materials. Cotton, the king of natural fibers, requires nanotechnological interventions to achieve the functionalities like antibacterial, UV protecting, super hydrophobic and flame retardancy. Nano-finishing also helps to impart these properties without affecting the inherent comfort nature of cotton. In addition, the amount of material required to impart the functional property is relatively less due to its nano-size range. Enzymes have become an indispensable part of textile processing and are utilized for a wide variety of applications in the modern textile industry. Various established enzyme-based processes that are currently used in the textile industry demonstrate the potential of industrial biotechnology to successfully provide ‘greener’ alternatives}, keywords = {Cotton,wet processing,Nanotechnology,biotechnology,smart textiles,advnanced tool,finishing}, url = {https://ejchem.journals.ekb.eg/article_68330.html}, eprint = {https://ejchem.journals.ekb.eg/article_68330_c7005666dd36a2a9a0eea69dde7083fb.pdf} }