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Title: Synthesis of spray dried polyvinyl pyrrolidone coated silver nanopowder and its application on wool and cotton for microbial resistance
Authors: Raja, A S M
Thilagavathi, G
Kannaian, T
Keywords: Antimicrobial finish
Polyvinyl pyrrolidone
Silver nanoparticle
Spray drying
Issue Date: Mar-2010
Publisher: CSIR
Abstract: Silver nanoparticle - polyvinyl pyrrolidone (PVP) composite containing 100 ppm of silver has been synthesized in powder form for textile applications, using sono-chemical method comprising sonication and reduction with trisodium citrate followed by spray drying. The synthesized PVP coated silver nanopowder is then characterized by UV-Visible spectra, atomic absorption spectra, transmission electron microscope and energy dispersive analysis of X-rays. The results indicate the presence of silver particle of the size 50-60 nm in the synthesized powder. The silver nanopowder has been applied on cotton and wool to impart antimicrobial efficacy by exhaustion method. The treated cotton fabric shows a clear microbial resistance with 35-40 mm zone of inhibition in the agar diffusion test against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. The treated wool fabric shows 100%, 97% and 99% antimicrobial efficacy in the quantitative AATCC 100 test against the above-mentioned microorganisms respectively.
Description: 59-64
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.35(1) [March 2010]

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