Sahar Shaarawy - Academia.edu (original) (raw)

Papers by Sahar Shaarawy

Research paper thumbnail of Functionalization of cotton fabrics with titanium oxide doped silver nanoparticles: Antimicrobial and UV protection activities

Luminescence, 2022

The target of our current work was designed to prepare titanium oxide doped silver nanoparticles ... more The target of our current work was designed to prepare titanium oxide doped silver nanoparticles (Ag/TiO2 NPs) and their impact on the functionalization of cotton fabrics. Additionally, the effect of Ag/TiO2 NPs was compared with the individually prepared silver nanoparticles (AgNPs) and titanium oxide nanoparticles (TiO2 NPs). In this work, AgNPs was prepared in its solid state using Arabic gum as efficient stabilizing and reducing agent. Then, two concentrations of the as-synthesized nanoparticles were used for functionalize the cotton fabrics by pad-dry-cure treatment in the presence of fixing agent to increase the durability of treated cotton fabrics against vigorous washing cycles. The finding implied that the prepared nanoparticles were successfully synthesized in nano-size with spherical shape and homogeneity. The efficacy of the functionalized cotton fabrics with those nanoparticles were evaluated in terms of multifunctional properties including antimicrobial and UV Protection Factor (UPF) and the mechanical features before and after many washing cycles; 10, 15 and 20 times. The resultant also proved that Ag/TiO2 NPs-treated cotton fabrics exhibited the greater values of both antimicrobial and UPF properties with enhancement in the tensile strength and elongation features. Thus, the combination between these two nanoparticles through doping reaction is suitable for imparting superior antimicrobial properties against the four tested microbial species (S. aureus, E. coli, C. albicans, and A. niger) and good UPF properties.

Research paper thumbnail of A new Approach for Preparation of Smart Conductive Textiles by Polyaniline through in-situ polymerization technique

Egyptian Journal of Chemistry, Jun 1, 2018

I N THIS work, cotton fabrics were treated by aniline (ANI) monomer. The treatment bath was consi... more I N THIS work, cotton fabrics were treated by aniline (ANI) monomer. The treatment bath was consists of Aniline (ANI) at different concentrations (0.10.5-mole/l), oxidizing agent (0.2 mole/l) as Ferric Chloride and doping agent as Egyptol(0.2 g/l) at different pH(14-) which adjusted by hydrochloric acid (HCl). This treatment carried out in order to deposit polyaniline (PANI) through in-situ polymerization technique to achieve conductive cotton fabrics in one step. The resulted fabrics were monitored by different tests as electrical measurements (conductivity, dielectric constant), color depth (K/S), square meter weight, tensile strength and elongation. To verify the presence of polyaniline, the treated fabric sample was examined using energy dispersive X-ray spectrum (EDX) and scanning electron microscopy (SEM). The results of tests show that, the electrical measurements, color depth, square meter weight, tensile strength and elongation increase by increasing aniline concentration. This behavior arises from increasing the extent of the conductive polymer on the fabric surface. The formulation, FeCl 3 (0.2 M/L), Egyptol (0.2 g/L), aniline (0.2 M/L), temperature (25°C) and 4 hrs treatment at pH 2 is the best for polymerization of aniline on the surface of the fabric to produce conductive and antimicrobial fabrics.

Research paper thumbnail of A review on the Development of Innovative Capabilities in the Textile Finishing of Natural Fibers

Egyptian Journal of Chemistry, 2020

H ERE in focus on the nano technology and biotechnology as new technique knock for textile multif... more H ERE 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

Research paper thumbnail of Multifunctional Viscose Fabric using Organic and Inorganic Nano Materials

Egyptian Journal of Chemistry, 2018

V ISCOSE fabrics were treated with environmentally nano-particles namely; nanoclay, nano-chitosan... more V ISCOSE fabrics were treated with environmentally nano-particles namely; nanoclay, nano-chitosan and nano-cellulose. Each of three nanoparticles was introduced in a solution containing reactive cyclodextrin (RCD) and sodium carbonate (Na 2 CO 3) and the treatment was performed using the pad dry-cure technique. Topographical investigation of the said nano-particles was conducted using transmission electron microscopy (TEM). The change of morphological structure of the treated fabrics relative to the native one was examined using high resolution field emission scanning electron microscope. FTIR and nitrogen content of the treated fabrics compared to the untreated ones were assessed. The changes in some physicomechanical characteristics of the treated viscose fabrics were monitored; namely abrasion, thickness, air permeability and moisture sorption test. The colour strength and washing fastness to dyed fabrics with both direct and reactive dyestuffs were evaluated. The effect of treatment of viscose on its resistance towards various microorganisms was appraised. Radar chart of the treated as well as untreated fabrics was calculated.

Research paper thumbnail of Treatment of Cotton Fabrics using Polyamines for Improved Coloration with Natural Dyes Extracted from Plant and Insect Sources

Egyptian Journal of Chemistry

Research paper thumbnail of Herbal Extract as an Ecofriendly Antibacterial Finishing of Cotton Fabric

Egyptian Journal of Chemistry, 2018

A N ECOFRIENDLY antimicrobial finishing agent has been prepared from herbal extracts " Chamomile,... more A N ECOFRIENDLY antimicrobial finishing agent has been prepared from herbal extracts " Chamomile, sage and green tea " which have been applied to cotton fabric in presence and absence of free formaldehyde crosslinking agent (Glyoxal) using pad, dry cure method. Antimicrobial properties of treated fabrics have been improved which make it more important and inevitable finish for garments. Therefore, cotton fabric was treated with each antibacterial extract at various concentrations 1, 2, % bwf using pad-dry-cure method. Treated fabrics have been evaluated for their antimicrobial activity. The Chamomile, sage and green tea treated fabrics exhibited antimicrobial activity against both gram negative and gram positive bacteria and yeasts unicellular fungi. The treated cotton fabrics have shown an excellent antimicrobial activity even after washing 10 cyclic wash. The samples were examined for SEM and physical properties of cotton including, tensile strength and elongation at break Abrasion Resistance, Water & air permeability and Stiffness of the fabric. also the treated fabric show very good results for |UV protection.

Research paper thumbnail of Eco-Friendly Multifinishing of cotton through Inclusion of Motmorillonite/chitosan Hybrid Nanocomposite

Natural resources were used in synthesis of innovative hybrid nanocomposites for cotton multifini... more Natural resources were used in synthesis of innovative hybrid nanocomposites for cotton multifinishing. The innovation is based on interaction of natural nanoclay and a biopolymer under the name montmorillonite (MMT) and chitosan (CTS) respectively. Thus aqueous slurry was prepared containing (MMT) and (CTS) along with citric acid and sodium hypophosphite. The slurry was sonicated to yield MMT/CTS hybrid nanocomposite. Different nanocomposites could be achieved through variation of concentration of both MMT and CTS as well duration of sonication. The as prepared MMT/CTS hybrid nanocomposites were completely homogeneous and remained stable for more than a month provided that the sonication is performed for at least 90 min. The hybrid nanocomposites were characterized using SEM, FTIR, TGA, X-ray diffraction and TEM analysis. To this end, the hybrid was applied to cotton fabric as per the pad-dry-cure method. Interaction of the newly synthesized MMT/CTS hybrid nanocomposites with cotto...

Research paper thumbnail of Novel micro-composites based on phosphorylated biopolymer / polyethyleneimine / clay mixture for cotton multi-functionalities performance

Novelty built-in micro-composites which are structurally matching with cotton using the pad-dry-c... more Novelty built-in micro-composites which are structurally matching with cotton using the pad-dry-cure method form the base of current innovation. The micro-composite, through its mix, is processed in the vicinity of cotton structure. The mix comprises the following components: phosphorylated natural biopolymer, (sodium alginate and CMC), activated clay (Montmorillonite K10 and KSF) using cetyltrimethy lammonium bromide, polyethyleneimine, butanetetracarboxilic acid and sodium hypophosphite. Characterization and properties of the as treated cotton fabrics vis-à-vis these of the untreated fabric are evaluated using many tools and facilities. It is believed that during application of the mix as per the aforementioned method interactions among the various components of the mix in addition to cotton cellulose of the fabric occur leading ultimately to certain of micro-composite and attached to the micro structural features of the cotton fabric. Thus attained modified cotton fabrics display...

Research paper thumbnail of Multifarious cellulosic through innovation of highly sustainable composites based on Moringa and other natural precursors

International Journal of Biological Macromolecules, 2020

Innovative composites processed using sorted out and characterized precursors from nature were fo... more Innovative composites processed using sorted out and characterized precursors from nature were formulated, synthesized then applied to cotton cellulose in the fabric form to confer on the cellulose multifunctional performance properties. Precursors embrace Moringa oleifera leaves aqueous and alcoholic extracts, chitosan, clay known as Kaolin and, silver nanoparticles (AgNPs). The latter were prepared under the reducing and stabilization actions of Moringa extracts. These Precursors are mixed to form binary or tertiary mixture formulations under variable formation conditions of the required composites. The composites and fabrics treated thereof were submitted to characterization, analysis and testing using traditional tools as well as state-of-the-art facilities including FT-IR, UV, Particle size analyser, TEM, SEM and EDX. Aqueous and alcoholic Moringa extracts exhibit different chemical attributes meanwhile both extracts fail to induce formation of AgNPs at up to pH 6. Intensive formation of AgNPs occurs only with the alcoholic extract provided that pH 8 or higher was employed. The particle size of AgNPs decreases by increasing the pH indicating chemical combination of Moringa extract and chitosan Moringa aqueous or alcoholic extract exhibit larger particle size than those containing chitosan and AgNPs. AgNPs were characterized by spherical shape with precise distribution of the particles. The nitrogen content, the physical properties and the mechanical properties of the treated fabrics were taken to demonstrate the magnitudes of intercalation and interactions of Moringa aqueous and alcoholic extracts individually and in composite with the cellulosic fabric. It was as well to emphasize the high antimicrobial activity imparted by current composites to the cellulosic fabrics. Equal emphasis was placed on UPF and easy-care properties of the treated fabrics. To this end, current research brings into focus novel cellulosic products with multifunctional performance as a direct impact of multifarious attributes caused by chemical combination of the composite in question and cellulosic fabrics.

Research paper thumbnail of Natural Source Constitutes Effective Route for Processing of Silver Nanoparticles for Medical Textile

Egyptian Journal of Chemistry, 2018

D UE TO great calling for medical and antimicrobial textiles based on eco-friendly natural agents... more D UE TO great calling for medical and antimicrobial textiles based on eco-friendly natural agents, silver nanoparticles were prepared using herbal extract peppermint, tulsi, chamomile, sage and green tea at optimized conditions. Plant extracts are very cost effective, eco-friendly and thus can be economic alternatively for large-scale synthesis of nanoparticles. In this research firstly, the herbal extracts were prepared by aqueous method, secondly using of herbal extracts in synthesis of silver nanoparticles from aqueous solutions of silver nitrate (AgNO 3). Synthesis of silver nanoparticles was characterized and confirmed by UV-visible spectroscopy and TEM. The herbal extracts and silver nanoparticles were applied in presence of eco-friendly finishing agent (glyoxal, aluminuim sulphate) on cotton fabrics which in turn characterized using scanning electron microscopy (SEM), (EDX) patterns, physical properties as tensile strength, water permeability, air permeability and roughness were also analyzed. Final characterization of treated cotton fabric against antimicrobial activity including gram negative strain, gram positive strains in addition to yeasts unicellular fungi. The results showed that cotton treated with AgNPs synthesis from herbal extracts had better antimicrobial activity.

Research paper thumbnail of Polyaconitic acid/functional amine/azo dye composite as a novel hyper-branched polymer for cotton fabric functionalization

Colloids and Surfaces B: Biointerfaces, 2018

High light  A hyperbranched polyaconitic acid with two different amine were synthesized  A new ... more High light  A hyperbranched polyaconitic acid with two different amine were synthesized  A new heterocyclic azo dye was synthesized and characterized  Characterization provide that both composites and azo dye have been well prepared  Treated fabrics have good antimicrobial activity  Fastness properties, physical and mechanical properties for fabrics were evaluated

Research paper thumbnail of A Novel Chitosan 3-Amino-1,2,4-triazole Hybrid: Preparation and Its Effects on Cotton Fabric properties

Journal of Taibah University for Science, 2017

A hybrid of chitosan and 3-amino-1,2,4-triazole was prepared using the semi-wet method, which all... more A hybrid of chitosan and 3-amino-1,2,4-triazole was prepared using the semi-wet method, which allows for the adsorption of the triazole molecules on the chitosan surface. Moreover, an easy method for applying this hybrid to cotton fabric was established. The tensional strength, uniformity and compatibility of the hybrid components in forming of a strong film were studied using different variables, including the chitosan 3-amino-1,2,4-triazole ratio, fixation temperature and time. The loading of the hybrid onto the fabric in the absence and presence of cross linker (butane tetra carboxylic acid) was also studied. The best conditions for preparing the hybrid was a 1:4 molar ratio of chitosan to 3-amino-1,2,4-triazole at 60 • C for 240 min, and those for the application of the hybrid to cotton fabric were a 1:1 molar ratio at 150 • C with a 5 min curing time. Both hybrid and treated cotton fabrics were characterized using FTIR, SEM, TGA, and DSC as well as the nitrogen content and tensional strength of the treated cotton. Finally, the antibacterial activities of the treated cotton fabric display 100% activity and excellent effects against gram-positive bacteria, Staphylococcus aureus and gram-negative Escherichia coli.

Research paper thumbnail of Graft Copolymerization of Chitosan with Butyl Acrylate and Application of the Copolymers to Cotton Fabric

Polymer-Plastics Technology and Engineering, 2005

Graft polymerization of butyl acrylate (BuA) onto chitosan using potassium persulfate (KPS) as in... more Graft polymerization of butyl acrylate (BuA) onto chitosan using potassium persulfate (KPS) as initiator was studied under different conditions. The grafting percentage (G%) and the grafting efficiency (GE%) increase by increasing KPS concentration up to 40 mmol/L then decrease thereafter. Another trend was observed with BuA concentration where G% increases significantly as BuA concentration increases within the range studied, i.e., 10%–100%,

Research paper thumbnail of Benign development of cotton with antibacterial activity and metal sorpability through introduction amino triazole moieties and AgNPs in cotton structure pre-treated with periodate

Carbohydrate Polymers, 2017

Highlights 4-amino-1,2,4-triazole treated cellulose fabrics was prepared and characterized Silver... more Highlights 4-amino-1,2,4-triazole treated cellulose fabrics was prepared and characterized Silver nanoparticles was synthesized using a biological compound (licorice root extract). Data were investigated through Langmuir, Freundlich and Temkin sorption isotherm models. Fabrics was evaluated for their thermal property, antibacterial activity and sorption models Fabrics show a good result against antibacterial activity and good result with thermal property

Research paper thumbnail of Functionalization of cotton fabrics with titanium oxide doped silver nanoparticles: Antimicrobial and UV protection activities

Luminescence, 2022

The target of our current work was designed to prepare titanium oxide doped silver nanoparticles ... more The target of our current work was designed to prepare titanium oxide doped silver nanoparticles (Ag/TiO2 NPs) and their impact on the functionalization of cotton fabrics. Additionally, the effect of Ag/TiO2 NPs was compared with the individually prepared silver nanoparticles (AgNPs) and titanium oxide nanoparticles (TiO2 NPs). In this work, AgNPs was prepared in its solid state using Arabic gum as efficient stabilizing and reducing agent. Then, two concentrations of the as-synthesized nanoparticles were used for functionalize the cotton fabrics by pad-dry-cure treatment in the presence of fixing agent to increase the durability of treated cotton fabrics against vigorous washing cycles. The finding implied that the prepared nanoparticles were successfully synthesized in nano-size with spherical shape and homogeneity. The efficacy of the functionalized cotton fabrics with those nanoparticles were evaluated in terms of multifunctional properties including antimicrobial and UV Protection Factor (UPF) and the mechanical features before and after many washing cycles; 10, 15 and 20 times. The resultant also proved that Ag/TiO2 NPs-treated cotton fabrics exhibited the greater values of both antimicrobial and UPF properties with enhancement in the tensile strength and elongation features. Thus, the combination between these two nanoparticles through doping reaction is suitable for imparting superior antimicrobial properties against the four tested microbial species (S. aureus, E. coli, C. albicans, and A. niger) and good UPF properties.

Research paper thumbnail of A new Approach for Preparation of Smart Conductive Textiles by Polyaniline through in-situ polymerization technique

Egyptian Journal of Chemistry, Jun 1, 2018

I N THIS work, cotton fabrics were treated by aniline (ANI) monomer. The treatment bath was consi... more I N THIS work, cotton fabrics were treated by aniline (ANI) monomer. The treatment bath was consists of Aniline (ANI) at different concentrations (0.10.5-mole/l), oxidizing agent (0.2 mole/l) as Ferric Chloride and doping agent as Egyptol(0.2 g/l) at different pH(14-) which adjusted by hydrochloric acid (HCl). This treatment carried out in order to deposit polyaniline (PANI) through in-situ polymerization technique to achieve conductive cotton fabrics in one step. The resulted fabrics were monitored by different tests as electrical measurements (conductivity, dielectric constant), color depth (K/S), square meter weight, tensile strength and elongation. To verify the presence of polyaniline, the treated fabric sample was examined using energy dispersive X-ray spectrum (EDX) and scanning electron microscopy (SEM). The results of tests show that, the electrical measurements, color depth, square meter weight, tensile strength and elongation increase by increasing aniline concentration. This behavior arises from increasing the extent of the conductive polymer on the fabric surface. The formulation, FeCl 3 (0.2 M/L), Egyptol (0.2 g/L), aniline (0.2 M/L), temperature (25°C) and 4 hrs treatment at pH 2 is the best for polymerization of aniline on the surface of the fabric to produce conductive and antimicrobial fabrics.

Research paper thumbnail of A review on the Development of Innovative Capabilities in the Textile Finishing of Natural Fibers

Egyptian Journal of Chemistry, 2020

H ERE in focus on the nano technology and biotechnology as new technique knock for textile multif... more H ERE 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

Research paper thumbnail of Multifunctional Viscose Fabric using Organic and Inorganic Nano Materials

Egyptian Journal of Chemistry, 2018

V ISCOSE fabrics were treated with environmentally nano-particles namely; nanoclay, nano-chitosan... more V ISCOSE fabrics were treated with environmentally nano-particles namely; nanoclay, nano-chitosan and nano-cellulose. Each of three nanoparticles was introduced in a solution containing reactive cyclodextrin (RCD) and sodium carbonate (Na 2 CO 3) and the treatment was performed using the pad dry-cure technique. Topographical investigation of the said nano-particles was conducted using transmission electron microscopy (TEM). The change of morphological structure of the treated fabrics relative to the native one was examined using high resolution field emission scanning electron microscope. FTIR and nitrogen content of the treated fabrics compared to the untreated ones were assessed. The changes in some physicomechanical characteristics of the treated viscose fabrics were monitored; namely abrasion, thickness, air permeability and moisture sorption test. The colour strength and washing fastness to dyed fabrics with both direct and reactive dyestuffs were evaluated. The effect of treatment of viscose on its resistance towards various microorganisms was appraised. Radar chart of the treated as well as untreated fabrics was calculated.

Research paper thumbnail of Treatment of Cotton Fabrics using Polyamines for Improved Coloration with Natural Dyes Extracted from Plant and Insect Sources

Egyptian Journal of Chemistry

Research paper thumbnail of Herbal Extract as an Ecofriendly Antibacterial Finishing of Cotton Fabric

Egyptian Journal of Chemistry, 2018

A N ECOFRIENDLY antimicrobial finishing agent has been prepared from herbal extracts " Chamomile,... more A N ECOFRIENDLY antimicrobial finishing agent has been prepared from herbal extracts " Chamomile, sage and green tea " which have been applied to cotton fabric in presence and absence of free formaldehyde crosslinking agent (Glyoxal) using pad, dry cure method. Antimicrobial properties of treated fabrics have been improved which make it more important and inevitable finish for garments. Therefore, cotton fabric was treated with each antibacterial extract at various concentrations 1, 2, % bwf using pad-dry-cure method. Treated fabrics have been evaluated for their antimicrobial activity. The Chamomile, sage and green tea treated fabrics exhibited antimicrobial activity against both gram negative and gram positive bacteria and yeasts unicellular fungi. The treated cotton fabrics have shown an excellent antimicrobial activity even after washing 10 cyclic wash. The samples were examined for SEM and physical properties of cotton including, tensile strength and elongation at break Abrasion Resistance, Water & air permeability and Stiffness of the fabric. also the treated fabric show very good results for |UV protection.

Research paper thumbnail of Eco-Friendly Multifinishing of cotton through Inclusion of Motmorillonite/chitosan Hybrid Nanocomposite

Natural resources were used in synthesis of innovative hybrid nanocomposites for cotton multifini... more Natural resources were used in synthesis of innovative hybrid nanocomposites for cotton multifinishing. The innovation is based on interaction of natural nanoclay and a biopolymer under the name montmorillonite (MMT) and chitosan (CTS) respectively. Thus aqueous slurry was prepared containing (MMT) and (CTS) along with citric acid and sodium hypophosphite. The slurry was sonicated to yield MMT/CTS hybrid nanocomposite. Different nanocomposites could be achieved through variation of concentration of both MMT and CTS as well duration of sonication. The as prepared MMT/CTS hybrid nanocomposites were completely homogeneous and remained stable for more than a month provided that the sonication is performed for at least 90 min. The hybrid nanocomposites were characterized using SEM, FTIR, TGA, X-ray diffraction and TEM analysis. To this end, the hybrid was applied to cotton fabric as per the pad-dry-cure method. Interaction of the newly synthesized MMT/CTS hybrid nanocomposites with cotto...

Research paper thumbnail of Novel micro-composites based on phosphorylated biopolymer / polyethyleneimine / clay mixture for cotton multi-functionalities performance

Novelty built-in micro-composites which are structurally matching with cotton using the pad-dry-c... more Novelty built-in micro-composites which are structurally matching with cotton using the pad-dry-cure method form the base of current innovation. The micro-composite, through its mix, is processed in the vicinity of cotton structure. The mix comprises the following components: phosphorylated natural biopolymer, (sodium alginate and CMC), activated clay (Montmorillonite K10 and KSF) using cetyltrimethy lammonium bromide, polyethyleneimine, butanetetracarboxilic acid and sodium hypophosphite. Characterization and properties of the as treated cotton fabrics vis-à-vis these of the untreated fabric are evaluated using many tools and facilities. It is believed that during application of the mix as per the aforementioned method interactions among the various components of the mix in addition to cotton cellulose of the fabric occur leading ultimately to certain of micro-composite and attached to the micro structural features of the cotton fabric. Thus attained modified cotton fabrics display...

Research paper thumbnail of Multifarious cellulosic through innovation of highly sustainable composites based on Moringa and other natural precursors

International Journal of Biological Macromolecules, 2020

Innovative composites processed using sorted out and characterized precursors from nature were fo... more Innovative composites processed using sorted out and characterized precursors from nature were formulated, synthesized then applied to cotton cellulose in the fabric form to confer on the cellulose multifunctional performance properties. Precursors embrace Moringa oleifera leaves aqueous and alcoholic extracts, chitosan, clay known as Kaolin and, silver nanoparticles (AgNPs). The latter were prepared under the reducing and stabilization actions of Moringa extracts. These Precursors are mixed to form binary or tertiary mixture formulations under variable formation conditions of the required composites. The composites and fabrics treated thereof were submitted to characterization, analysis and testing using traditional tools as well as state-of-the-art facilities including FT-IR, UV, Particle size analyser, TEM, SEM and EDX. Aqueous and alcoholic Moringa extracts exhibit different chemical attributes meanwhile both extracts fail to induce formation of AgNPs at up to pH 6. Intensive formation of AgNPs occurs only with the alcoholic extract provided that pH 8 or higher was employed. The particle size of AgNPs decreases by increasing the pH indicating chemical combination of Moringa extract and chitosan Moringa aqueous or alcoholic extract exhibit larger particle size than those containing chitosan and AgNPs. AgNPs were characterized by spherical shape with precise distribution of the particles. The nitrogen content, the physical properties and the mechanical properties of the treated fabrics were taken to demonstrate the magnitudes of intercalation and interactions of Moringa aqueous and alcoholic extracts individually and in composite with the cellulosic fabric. It was as well to emphasize the high antimicrobial activity imparted by current composites to the cellulosic fabrics. Equal emphasis was placed on UPF and easy-care properties of the treated fabrics. To this end, current research brings into focus novel cellulosic products with multifunctional performance as a direct impact of multifarious attributes caused by chemical combination of the composite in question and cellulosic fabrics.

Research paper thumbnail of Natural Source Constitutes Effective Route for Processing of Silver Nanoparticles for Medical Textile

Egyptian Journal of Chemistry, 2018

D UE TO great calling for medical and antimicrobial textiles based on eco-friendly natural agents... more D UE TO great calling for medical and antimicrobial textiles based on eco-friendly natural agents, silver nanoparticles were prepared using herbal extract peppermint, tulsi, chamomile, sage and green tea at optimized conditions. Plant extracts are very cost effective, eco-friendly and thus can be economic alternatively for large-scale synthesis of nanoparticles. In this research firstly, the herbal extracts were prepared by aqueous method, secondly using of herbal extracts in synthesis of silver nanoparticles from aqueous solutions of silver nitrate (AgNO 3). Synthesis of silver nanoparticles was characterized and confirmed by UV-visible spectroscopy and TEM. The herbal extracts and silver nanoparticles were applied in presence of eco-friendly finishing agent (glyoxal, aluminuim sulphate) on cotton fabrics which in turn characterized using scanning electron microscopy (SEM), (EDX) patterns, physical properties as tensile strength, water permeability, air permeability and roughness were also analyzed. Final characterization of treated cotton fabric against antimicrobial activity including gram negative strain, gram positive strains in addition to yeasts unicellular fungi. The results showed that cotton treated with AgNPs synthesis from herbal extracts had better antimicrobial activity.

Research paper thumbnail of Polyaconitic acid/functional amine/azo dye composite as a novel hyper-branched polymer for cotton fabric functionalization

Colloids and Surfaces B: Biointerfaces, 2018

High light  A hyperbranched polyaconitic acid with two different amine were synthesized  A new ... more High light  A hyperbranched polyaconitic acid with two different amine were synthesized  A new heterocyclic azo dye was synthesized and characterized  Characterization provide that both composites and azo dye have been well prepared  Treated fabrics have good antimicrobial activity  Fastness properties, physical and mechanical properties for fabrics were evaluated

Research paper thumbnail of A Novel Chitosan 3-Amino-1,2,4-triazole Hybrid: Preparation and Its Effects on Cotton Fabric properties

Journal of Taibah University for Science, 2017

A hybrid of chitosan and 3-amino-1,2,4-triazole was prepared using the semi-wet method, which all... more A hybrid of chitosan and 3-amino-1,2,4-triazole was prepared using the semi-wet method, which allows for the adsorption of the triazole molecules on the chitosan surface. Moreover, an easy method for applying this hybrid to cotton fabric was established. The tensional strength, uniformity and compatibility of the hybrid components in forming of a strong film were studied using different variables, including the chitosan 3-amino-1,2,4-triazole ratio, fixation temperature and time. The loading of the hybrid onto the fabric in the absence and presence of cross linker (butane tetra carboxylic acid) was also studied. The best conditions for preparing the hybrid was a 1:4 molar ratio of chitosan to 3-amino-1,2,4-triazole at 60 • C for 240 min, and those for the application of the hybrid to cotton fabric were a 1:1 molar ratio at 150 • C with a 5 min curing time. Both hybrid and treated cotton fabrics were characterized using FTIR, SEM, TGA, and DSC as well as the nitrogen content and tensional strength of the treated cotton. Finally, the antibacterial activities of the treated cotton fabric display 100% activity and excellent effects against gram-positive bacteria, Staphylococcus aureus and gram-negative Escherichia coli.

Research paper thumbnail of Graft Copolymerization of Chitosan with Butyl Acrylate and Application of the Copolymers to Cotton Fabric

Polymer-Plastics Technology and Engineering, 2005

Graft polymerization of butyl acrylate (BuA) onto chitosan using potassium persulfate (KPS) as in... more Graft polymerization of butyl acrylate (BuA) onto chitosan using potassium persulfate (KPS) as initiator was studied under different conditions. The grafting percentage (G%) and the grafting efficiency (GE%) increase by increasing KPS concentration up to 40 mmol/L then decrease thereafter. Another trend was observed with BuA concentration where G% increases significantly as BuA concentration increases within the range studied, i.e., 10%–100%,

Research paper thumbnail of Benign development of cotton with antibacterial activity and metal sorpability through introduction amino triazole moieties and AgNPs in cotton structure pre-treated with periodate

Carbohydrate Polymers, 2017

Highlights 4-amino-1,2,4-triazole treated cellulose fabrics was prepared and characterized Silver... more Highlights 4-amino-1,2,4-triazole treated cellulose fabrics was prepared and characterized Silver nanoparticles was synthesized using a biological compound (licorice root extract). Data were investigated through Langmuir, Freundlich and Temkin sorption isotherm models. Fabrics was evaluated for their thermal property, antibacterial activity and sorption models Fabrics show a good result against antibacterial activity and good result with thermal property