Development of antimicrobial activity and mechanical performances of cotton fabric treated with silver nano particles (AgNPs) (original) (raw)
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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].
Investigation of antibacterial activity of cotton fabric incorporating nano silver colloid
Journal of Physics: Conference Series, 2009
In this work, silver nanoparticles were prepared by polyol process with microwave heating and incorporated on cotton fabric surfaces. The antibacterial performance of the antibacterial cotton fabric was tested for different concentration of nano-sized silver colloid, contact time germs, and washing times. It was found that antibacterial activity increased with the increasing concentration of nano-sized silver colloid. The antibacterial fabric with 758 mg/kg of silver nanoparticles on surface cotton was highly effective in killing test bacteria and had excellent water resisting property.
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%...
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.
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).
FABRIC TREATMENT WITH BIOSYNTHETIC SILVER NANO PARTICLES USING PLANT EXTRACT
Transstellar Journals, 2022
Cotton fabric was treated with green synthesized Silver Nano Particles (AgNPs) using a mixture of Neem, Mango and Tulasi extract as a reducing agent in the batch method. Chemical reduction methods were followed for Nano particles formation by adding the extract to Silver nitrate solution in drops. The liquid was then applied to enzymatic pretreated fabric using padding mangle. Both liquid and fabrics samples are characterized using Particle Analyzer (DLS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and UV-Spectrophotometer. Average Particle size found 98nm and Zeta Potential was-45 to 55(mV). The purity and crystalline nature of AgNPs were confirmed based on the XRD assessment. In addition, specific functional groups, which led to silver nitrate reduction in AgNP formation, were examined using FTIR. Antibacterial activity assays with Gram Positive and Gram negative demonstrated that AgNPs reduced bacterial growth and produced well-defined inhibition zones.
The development of antimicrobial cotton fabrics using herbal nanosilver has been investigated in this present work. The herbal nanosilver were synthesized by the herbal plant extract method and were directly applied onto the cotton fabric with the help of pad-dry-cure method. The antimicrobial activity of the finished fabrics was assessed qualitatively by agar diffusion and quantitatively by percentage reduction test. The antifungal activity of the finished fabrics was assessed qualitatively by agar diffusion methods. The topographical nature of the both treated and untreated fabrics was studied. The results show that the finished fabric demonstrated significant antibacterial activity against both bacteria and fungus in both qualitative and quantitative methods. The scanning electron microscopic analysis revealed the embedding of herbal nanosilver in treated fabrics. The study of wash durability of the herbal nanosilver treated fabric was also carried out and found to withstand up t...
Nano silver in antimicrobial textiles
Textiles are flexible materials consisting of a web of fibres. These fibres can be exposed to microbial contamination, which leads to decline in the quality of the textile. Nanotechnology can be integrated into the process of manufacturing textiles to make them less susceptible to microbial degradation, particularly in the case of special usage textiles. This article discusses how nanosilver can be employed as an antimicrobial agent in textiles. Silver nanoparticles, in low concentrations are not harmful to the human body and have a broad spectrum of antimicrobial actions. Not only do the textiles have the ability to exhibit antibacterial functions but they also exhibit high efficiency and excellent durability. This paper further illustrates the synthesis and optimizing of silver nanoparticles from fungus filtrate, green (leaf and fruit extracts) and other sources and their characterization; the embedding of the nanoparticles into wool, silk, cotton fabrics and leather; the examining of the finished fabrics for their features and characterization ; and the testing of these fabrics using sophisticated techniques. Additionally, there is a brief discussion on the laundering scenarios of the treated fabrics. There is also a brief discussion on the self-cleaning ability of textiles.
SN Applied Sciences
This study reports the antimicrobial activity and improved dyeing performance of cotton knitted fabric by depositing silver nanoparticles on the surface. The cotton fabric is first treated with caustic soda (NaOH) of three different concentrations to activate the hydroxyl groups on the cellulose surface and then the nanoparticles are introduced on fabric surface by direct reduction of silver nitrate salt using ascorbic acid. The presence of silver nanoparticles on the fabric surface is clearly observed by scanning electron micrograph. The elementary analysis is done by energy dispersive spectroscopy and the chemical interaction of cotton fibre with nano silver is characterized by Fourier transform infrared spectrum. In this work, the antimicrobial activity on Ag deposited sample is investigated by quantitative analysis against both Gram positive (S. aureus) and Gram negative (E. coli) bacteria. Results shows a significant antimicrobial activity such as more than 90% bacterial reduction of both Gram positive and Gram negative bacteria are inhibited. The fabric sample is dyed with 2% direct dye and consequently the result shows very good performance in dye exhaustion, colour strength and fastness property. For instance, the incorporation of Ag nanoparticles increases 7% of dyestuff exhaustion and 15% of colour strength of the fabric. However, Ag nanoparticles deposited fabric loses its strength slightly due to the pretreatment using NaOH for the functionalization of cotton.
Journal of Materials Science, 2014
The effect of cotton fabric pretreatment with biopolymer chitosan (CHT) on deposition of colloidal triangular silver nanoplates was studied. Also, the influence of deposited silver nanoparticles on color and antimicrobial activity of cotton fabrics was evaluated. Characterization of colloidal silver nanoparticles as well as silver nanoparticles deposited on cotton fabrics was performed using electron microscopy (TEM and FESEM), XRD analysis, atomic absorption spectroscopy, UV-Vis absorption, and reflectance spectroscopy. The cotton fabric turned from white to blue color upon deposition of triangular silver nanoplates. Antimicrobial activity of CHT pretreated cotton fabric impregnated with silver nanoparticles was tested against Gram-negative bacteria Escherichia coli, Grampositive bacteria Staphylococcus aureus, and fungi Candida albicans. Deposited silver nanoparticles imparted excellent antimicrobial properties to cotton fabric. The standard sterilization procedure of cotton fabric for antimicrobial activity testing resulted in color change of the fabric from blue to yellow. This color change is most likely consequence of transformation of triangular silver nanoplates into nanodiscs and/or their agglomeration into spheroids.