FABRIC TREATMENT WITH BIOSYNTHETIC SILVER NANO PARTICLES USING PLANT EXTRACT (original) (raw)
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8TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING
The current research focuses on the synthesis, characterization and application of silver nano particles (AgNPs) on cotton fabric to create the antimicrobial property and improve its mechanical performances. Here nano particles are synthesized by reduction of salt in sol-gel method and applied on cotton fabric surface by mechanical thermo fixation technique. Various instrumental tests like UV spectroscopy, zetasize analyzing and scanning electron microscopy (SEM) are carried out to characterize the synthesized nano particles. The size of AgNPs is found about 60 nm and the shape is approximately spherical. The antimicrobial activity of treated fabric is examined against two bacteria named S. aureus (gram positive) and E. coli (gram negative) by bacterial reduction system. The result shows very good antimicrobial property in both gram positive and gram negative bacteria. An appreciable improvement on mechanical performances of nano treated fabric is also obtained.
Advanced Materials Letters, 2016
Silver nano particles (AgNPs) was synthesized using extract of Senecio glaucus extraxt. The effect of extract source on the shape of the Ag nanoparticles and antibacterial activity are investigated. The nature of AgNPs synthesized was analyzed by UV-vis spectroscopy and transmission electron microscopy (TEM). Silver nanoparticles were found to have an average size of 15-20 nm and mostly spherical. The antibacterial potential of modified extract containing synthesized AgNPs was compared with that of pure extract by cup plate method. Antibacterial activity of modified plant extract was reported and evaluated against drug resistant of bacterial isolates. Modified shoot extract gives higher response than that of modified root extract which facilitate them as a good alternative therapeutic approach in future. Phytochemical analysis revealed that Senecio glaucus extract act as reducing and stabilizing agent for synthesized silver nanoparticles (AgNPs).
Antibiotics
An environment friendly and wash-durable silver nanoparticle treatment of cotton fabrics was carried out by in situ reduction of silver nitrate using Azadirachta indica leaf extract. The wash durability of the silver nanoparticles treatment on the cotton fabric was improved by pretreating the fabrics by mercerization and by adopting hydrothermal conditions of 120 °C temperature and 15 psi pressure for the in situ synthesis. The silver nanoparticle treated fabrics were characterized using scanning electron microscopy, colorimetric analysis and inductively coupled plasma mass spectroscopy. The coating of silver nanoparticles was seen to be dense and uniform in the scanning electron micrographs of the treated fabrics. An evaluation of the antibacterial efficacy of the silver nanoparticle treated fabric against antibiotic-resistant Gram-positive and Gram-negative strains was carried out. The antibacterial efficacy was found to be the highest against Bacillus licheniformis, showing 93.3%...
International Journal of Nanomaterials, Nanotechnology and Nanomedicine, 2019
Silver nanoparticles have an extremely large specifi c surface area, which increases when in contact with bacteria, viruses, and fungi. This signifi cantly increases their bactericidal activity by decreasing the sizes of silver nanoparticles and by increasing their surface area to volume ratio [15]. According to the literature, the mechanisms of the antimicrobial activity of Ag + and Ag NPs are very similar to each other. Both Ag + and Ag NPs can participate in intermolecular interactions with the cell membrane of bacteria. Furthermore, Ag particles smaller than 10nm have been reported to penetrate into the interior of microorganism cells, where they bind to the thiol groups of enzymes and nucleic acids [16,17].
Carbohydrate Polymers, 2009
The aim of this study was to examine the antimicrobial efficiency and color changes of cotton fabrics loaded with colloidal silver nanoparticles which were synthesized without using any stabilizer. The influence of colloidal concentration and consequently, the amount of silver deposited onto the fabric surface, on antimicrobial activity against Gram-negative bacterium Escherichia coli, Gram-positive bacterium Staphylococcus aureus and fungus Candida albicans as well as laundering durability of obtained effects were studied. Although cotton fabrics loaded with silver nanoparticles from 10 ppm colloid exhibited good antimicrobial efficiency, their poor laundering durability indicated that higher concentrated colloids (50 ppm) must be applied for obtaining long-term durability. Additionally, the influence of dyeing with C.I. Direct Red 81 on antimicrobial activity of cotton fabrics loaded with silver nanoparticles as well as the influence of their presence on the color change of dyed fabrics were evaluated. Unlike color change, the antimicrobial efficiency was not affected by the order of dyeing and loading of silver nanoparticles.
Biosynthesis of silver nanoparticles (AgNPs) by banana leaf extracts was achieved. Plant extracts are not expensive and ecofriendly and thus can be an economic and efficient alternative for the large-scale synthesis of nanoparticles. The AgNPs formed by reaction of banana leaf extracts with aqueous solutions of silver nitrate (AgNO3). The synthesized nano-particles were confirmed by using UV–Vis absorption spectroscopy, X-Ray diffraction (XRD) and Transmission Electron Microscope (TEM). The produced AgNPs has been applied on cotton fabric to impart antimicrobial efficacy by exhaustion method. The treated cotton fabric shows a clear microbial resistance against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. The treatments of produced AgNPs on cotton not only improve its antimicrobial efficiency but also influenced the tensile strength of the fabric sample positively. The treatment was found to enhance the color depth and fastness properties of dyed cotton fabric samples.
Egyptian Journal of Chemistry
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.
Antibacterial and UV-Protective Cotton fabric made by Herbal Synthesized Silver Nanoparticles
Ecofriendly Herbal synthesis of silver nanoparticle (H-AgNPs) was carried out using Narikel Leaf, Panasa Leaf, and Amalaki Fruit. Their application on the cotton fabric was studied to create protective fabric in terms of Antibacterial and UV-Protective properties. The resultant metal particles were characterized by VU-vis spectra, Particle size analyzer and FTIR. The H-AgNPs deposition on the cotton fabric was characterized FTIR, EDX, SEM, TGA and XRD analysis. The antibacterial activity of H-AgNPs loaded cotton show 99% bacterial reduction against S. Aureus and E. Coli bacteria. UV protection was assessed by AS-NZS 4399 standard and excellent UPF of the order 32 was achieved.
Autex Research Journal
The purposes of the current research were to deposit the silver nanoparticles on the surface of a textile woven fabric and evaluate their dyeing performance and antibacterial activity. The synthesis of silver nanoparticle (Ag°) is done by the in situ method. Strong alkali is used to improve functionality of cellulose before the application of silver nitrate salt (AgNO3). The silver nanoparticle is formed by reduction of ascorbic acid. Various instrumental analyses are done to prove the formation of nanoparticles on the fabric surface. The morphology of nanodeposited fabric is characterized by using scanning electron microscope (SEM), elemental composition is done by energy dispersive spectroscopy, and crystallinity of nanoparticles is obtained by X-ray diffraction (XRD). Nanodeposited fabric is then dyed with direct dyestuff (Direct Red-89). Fourier transform infrared spectroscopy analysis is done to explore the bonding phenomena of un-dyed and dyed fabrics. The dyeing performance a...
Journal of the Serbian Chemical Society, 2012
This study compares the effect of colloidal silver nanoparticles and the commercial RUCO-BAC AGP agent with silver chloride as the active component on the antibacterial activity of dyed cotton fabrics. Cotton fabrics were dyed with vat dyes Bezanthren Olive T and Bezanthren Grey FFB. The antibacterial activities of the silver-loaded dyed cotton fabrics were tested against the Gram-positive bacterium Staphylococcus aureus and the Gram-negative bacterium Escherichia coli. Unlike RUCO-BAC AGP, the synthesized silver nanoparticles deposited onto the dyed cotton fabrics provided maximum bacteria reduction, independent of the applied dye. The stability of the modified cotton fabrics was analyzed in artificial sweat at pH 5.5 and 8.0. Approximately the same amount of silver was released from the differently modified cotton fabrics in artificial sweat. Larger amounts of silver were released in the sweat at pH 8.0.