National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Herbal Textile Finishes – Natural Antibacterial Finishes for Cotton Fabric.161180151910.21608/ejchem.2017.541.1001ENSaadZaghloulNational Research CentreAmiraEl-shafieNational Research CentreManalEl-bisiNational Research Centre0000-0001-6011-3136RakiaRefaieNational Research CentreJournal Article20170109Abstract<br /> Improvement of physical properties in a addition to impart antimicrobial properties to cotton fabric and modified cotton fabric by using herbal in the presence of softeners is the target of the present work, first of all modification of cotton fabric was done during cationization process by the means of cationizing agent, namely, 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (Quat-188); also, cotton fabric was modified during carboxymethlation process of it. And then treatments of cotton and modified cotton fabrics was carried out by different concentration of both Neem and Tulsi Extract as essential oil in the presence of Silicon Micro Emulsion (SiME) or Nonionic softeners for improving the performance of the treated fabric. Physical properties evaluations of the treated fabric were done by monitoring tensile strength, elongation, roughness, water absorbency (wettability). Finally the treated fabrics was evaluated as antimicrobial and characterized by the mean of Scanning Electron Microscope (SEM).<br /> Key words: Cotton; Antimicrobial; Textile Finishing; Herbal; Medical textile; Essential oil.National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Amphiphilic Cellulose as Stabilizer for Oil/ Water Emulsion181204152010.21608/ejchem.2017.544.1002ENJournal Article20170111In this work, amphiphilic ethyl amino-cellulose as oil/water emulsion stabilizer was prepared from bagasse by extraction of cellulose from bleached bagasse pulp. By periodate oxidation of cellulose the corresponding C-2/C-3 dialdehyde cellulose produced, which reacted with ethyl amine to obtain ethyl amino-cellulose (amphiphilic cellulose) through Schiff's base reaction <br /> (reductive amination). The produce ethyl-amino cellulose has a great attention in soybean oil/ water stabilization.The amphiphilic cellulose was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, Transmission electron microscopy (TEM), Thermal gravimetric analysis (TGA), and Differential Scanning Calorimetry (DSC). Foureir transform infrared spectroscpy has been proved the incorporation of soybean oil in ethyl amino-cellulose by as their is a new groups appeared in the foureir transform infrared spectra of the prepared emulsion. TEM used to prove the nano-size of the prepared samples. TGA and DSC proved the thermal stability and melting temperature. Sample was successfully applied as stabilizer of soybean oil in water emulsion.National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Studies on The Effects of Kaolin and Modified Kaolin on the Flammability of APP/PP System205219152110.21608/ejchem.2017.593.1005ENMarwa ASheriefNational Research Centre0000-0003-1159-0563AdlyHannaNational Research Centre0000-0001-9589-9597Eglal. R.SouayaNational Research CentreAlaa SAbdelmoatyNational Research CentreJournal Article20170123This work is a continuation of the previous works by the authors to increase the effeciency of ammonium polyphosphate(APP) as flame retardant for polypropylene(PP). In this work a more abundant kaolin was used. Also to improve the effciency of kaolin, an acid modification by sulfuric acid was used. XRD, XRF, IR, SEM and BET were used to characterization the samples. TGA and DTA were used to evaluate the prepared samples as flame retardant. For comparison, six samples of (APP/ Ore kaolin)/PP were prepared and other six samples (APP/Modified kaolin)/PP have the same composition and identical to the ore kaolin were prepared. The analysis of the XRD, IR and SEM results indicate that the acid treatment of kaolin increases the SiO2 content which lead to increase the surface area. In the same time the acid leachig causes some destortion in the crystallinity and the layers. The evaluation of the flamability of the system by using the TGA indicate that the presence of kaolin increases the time of degradation of PP. On other hand, the modification of kaolin by sulfuric acid improves the role of the kaolin when added to the APP.National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Sequestration of Methylene Blue and Lead ions by MWCNT Modified with Polyconducting Polymers221241158310.21608/ejchem.2017.564.1003ENMona Abdel HamidShoumanNational Research CentreAmina Abdel MeguidAttiaNational Research CenterNady AttiaFathyNational Research Center0000-0002-6522-1053Khadiga MohamedAbbasNational Research Center0000-0003-2569-7484Saeed MohamedSayyahBeni-Seuf UniversityAmgadBolisBeni - Seuf UniversityJournal Article20170116Taking into consideration the perspective of green chemistry, an attempt was made to investigate regenerative material for carbon nanotubes (CNTs) with high productivity. The special properties of CNTs, such as easy functionalization ability, high surface area, and unique thermal, mechanical, and electrical properties, make them an appealing component for composite materials, which resulted in the attraction of great interest on CNT-based composites. This research work focuses mainly on multiwall carbon nanotubes (MWCNTs) synthesized from camphor over iron nitrate catalyst supported on alumina by wet impregnation method. The formation of MWCNTs and incorporation of poly conducting polymers (o- and m-Toluidine) on the surface of MWCNTs was confirmed by high resolution transmission electron microscope (HRTEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), Ultraviolet visible spectroscopy (UV-Vis), low temperature nitrogen adsorption and Thermo-Gravimetric analysis (TGA). The performance evaluation of as-synthesized MWCNTs and their nanocomposites towards adsorption of methylene blue (MB) dye and Pb(II) was also highlighted. MWCNTs and their nanocomposites pose a great potential as a promising material for application in adsorption from aqueous solution.National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Effect of Acetamide Derivative and its Mn-Complex as Corrosion Inhibitor for Mild Steel in sulphuric Acid243259161410.21608/ejchem.2017.674.1014ENOmniaEl-Sayed ShehataNational Research Centre, 30 El-Tahrir Street0000-0001-8134-2675Journal Article20170216Novel hydrazone ligand N-(4-(2-hydrazinyl-2-oxoethoxy) phenyl)-acetamide [HL] and its metal complex of manganese (II) [Mn-HL] were investigated as corrosion inhibitors for mild steel in diluted sulphuric acid solution at 25 + 1oC using three electrochemical methods which show matching in results of three electrochemical techniques; potentiodynamic polarization, cyclic voltammetry & electrochemical impedance spectroscopy techniques. The experimental results clarify the inhibitive effect of N-(4-(2-hydrazinyl-2-oxoethoxy) phenyl) acetamide [HL] and its Mn (II) complex on mild steel that increase in presence of the complex [Mn-HL] more than [HL] where The ligand displayed low efficiencies as corrosion inhibitors against localized corrosion while complex give more efficiency corrosion inhibition. Detailed study effect of 0.1M sulphuic acid with and without ligand and its complex ligand MnCl2 on mild steel shown by Surface morphology of specimen using scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analysis that show improvement appears in surface morphology in surface of mild steel with complex of ligand from localized attack to general attack (homogeneous surface and protective film).National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Physicomechanical Properties of Nano Polystyrene Nanocomposites261276292810.21608/ejchem.2017.2928ENJournal Article20161120PREPARATION of nano metal oxides (Fe<sub>2</sub>O<sub>3</sub>, ZnO and TiO<sub>2</sub>) and nano …… sphere polystyrene (PS) has been done in micellar solution. Nanocomposite films have been prepared by doping nano polystyrene with different ratios of nano metal oxide ranged from 0.25 up to 3 wt%. These nanocomposites were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR).Thermo gravimetric analysis (TGA) and mechanical properties have also been investigated. By comparison with the values obtained for the PS, it was observed that the thermal stability is higher for the nanocompoistes and increases with increasing the nano metal oxides concentration in these samples. The results indicate that the tensile strength, elongation at break and Young’s modulus of all the nanocomposites enhanced with the addition of metal oxides nanoparticles compared with the pure PS.<br /> National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Synthesis, Characterization and Antimicrobial Evaluation of New cis-Bicyclo [3.3.0] octane-3,7- dione Derivatives277289292910.21608/ejchem.2017.2929ENJournal Article20161214National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Catalytic Cracking of Vegetable Oils for Producing Biofuel291300296710.21608/ejchem.2017.2967ENJournal Article20161219<strong>C</strong>ASTOR oil as well as used cooking oil have been catalytically cracked using three types of catalysts being zinc chloride, sodium carbonate and calcium oxide and the products of cracking were tested for their chemical and physical properties relevant to their use as fuels. Products obtained by cracking castor oil were found to be more suitable as bio-kerosene while those obtained by catalytic cracking of used cooking oil were more suitable as biodiesel. Therefore, the product obtained by catalytic cracking of used cooking oil has been then tested for its effect on the performance of a diesel engine compared to regular diesel fuel. Blends of catalytically cracked used cooking oil with regular diesel fuel were used for running the engine at different engine loading and the specific fuel consumption as well as the exhaust temperature had been determined at each load. The results have shown that blending of regular diesel fuel with catalytically cracked oil resulted in a reduction in the thermal efficiency compared to that if the engine was run using regular diesel fuel only .Such blending resulted also an increase in the exhaust temperature.<br /> <strong> </strong>National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170430Preparation and Reactions of Certain Racemic and Optically Active Cyanohydrins Derived from 2-Chlorobenzaldehyde, 4-Fluorobenzaldehyde, Benzo[d][1,3]-dioxole-5-carbaldehyde and 2,3-Dihydrobenzo[b][1,4]dioxine-6-carbaldehyde. Antimicrobial and in vitro Antitumor Evaluation of the Products301328326210.21608/ejchem.2017.3262ENJournal Article20161226THE CHEMOENZYMATIC reaction of selected aldehydes, ……...namely 2-chlorobenzaldehyde (1a), 4-fluorobenzaldehyde (1b), benzo[<em>d</em>][1,3]dioxole-5-carbaldehyde (1c) and/or 2,3-dihydrobenzo [<em>b</em>] [1,4] dioxine-6-carbaldehyde (1d) with hydrogen cyanide in presence of (<em>R</em>)-oxynitrilase (<em>R</em>)-Pa HNL [EC 4.1.2.10] from almonds, as a chiral catalyst, gave the optically active cyanohydrin enantiomers (<em>R</em>)-2a-c, respectively. Acetone cyanohydrin (3), was also used, as a transcyanating agent, to give the same products. The racemic cyanohydrins (<em>R,S</em>)-2a-d have been synthesized, as well, by treating compounds 1a-d with aqueous potassium cyanide solution in presence of a saturated solution of sodium metabisulphite (Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub>). The optical purity of cyanohydrins (<em>R</em>)-2a-c was determined through their derivatization with (<em>S</em>)-naproxen chloride (<em>S</em>)-5 to the respective diastereomers (<em>R,2S</em>)-6a-c which were obtained in diastereomeric excess (de) values up to 93 % (<sup>1</sup>H NMR). Heating compounds (<em>R</em>)-2a,b and / or their racemic analogues (<em>R,S</em>)-2a-c with concentrated hydrochloric acid gave the respective α-hydroxycarboxylic acids 7a-c. Moreover, reduction of cyanohydrins (<em>R</em>,S)-2b,c under different conditions resulted in a hydrodecyanation giving the respective primary alcohols 8a,b. Structures and configurations of the new compounds were confirmed with compatible elementary microanalyses and spectroscopic ( IR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, MS and single crystal X-ray crystallography) measurements. The antimicrobial activity of derivatives 6a-d against four bacterial species<em> (Bacillus subtilis, Staphylococcus aureus, Escherichia coli </em>and<em> Pseudomonas aeruginosa) </em>and two fungi (<em>Aspergillus</em> <em>flavus</em> and <em>Candida albicans</em>) were undertaken. Moreover, compounds (<em>R,2S</em>)-6b, (<em>R,2S</em>)(<em>S,2S</em>)-6b and (<em>R,2S</em>)−6c were screened for their <em>in virto</em> antitumor activity against three human solid cancer cell lines (HCT 116, HepG2 and MCF-7). In general, the tested compounds were found inactive or showed weak activities in comparison with the standard drugs.National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRTEgyptian Journal of Chemistry0449-228560220170401Structural and Catalytic Properties of Sulphated Zirconia doped by Zn Oxide329345328810.21608/ejchem.2017.3288ENJournal Article20170528SULFATED zirconia (SZ) and zinc supported sulfated ……zirconia (Zn/SZ) catalysts were synthesized, characterized and evaluated by coumarin synthesis reaction. The reaction was carried by reacting resorcinol and ethyl acetoacetate with a molar ratio 1:2 respectively. The investigated SZ and Zn/SZ catalysts were prepared by the simple impregnation method with an aqueous solution of H<sub>2</sub>SO<sub>4</sub> as a precipitating agent, followed by drying in rotary and finally calcined at 600 <sup>o</sup>C for 3 hrs. The physicochemical properties of the investigated catalysts were characterized by the x-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and potentiometric titration to characterize the number and the strength of the acid sites. The 6%Zn/SZ catalyst possessed the maximum catalytic activity as well the number of acid sites. Increase of the tetragonal phase content in ZrO<sub>2</sub> increases the catalytic activity.