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Preparation and application of silver nanoparticles on silk for imparting antimicrobial properties
Author(s) -
Gulrajani M. L.,
Gupta Deepti,
Periyasamy S.,
Muthu S. G.
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27584
Subject(s) - hydrosol , silver nitrate , silver nanoparticle , materials science , hydrazine (antidepressant) , scanning electron microscope , reducing agent , nuclear chemistry , particle size , nanoparticle , transmission electron microscopy , silk , antimicrobial , chemical engineering , particle (ecology) , silver nano , chemistry , nanotechnology , composite material , organic chemistry , nano , chromatography , oceanography , geology , engineering
Silver nanoparticles were produced by a chemical reduction method that reduced silver nitrate with reducing agents such as hydrazine and glucose. The silver nanoparticles were characterized with transmission electron microscope, scanning electron microscope, and optical microscope. The effects of process parameters such as the stirring speed, temperature, type of reducing agent, and dispersing agent on the particle size were studied. The particle size decreased with an increase in the stirring speed and a decrease in the process temperature. Smaller particles were formed when the silver nitrate was reduced by glucose versus those that were formed by reduction with hydrazine. Silver nanoparticles with average sizes of 10 and 35 nm, produced by reduction with hydrazine at 5 and 40°C, were applied to silk by an exhaust method. Silk fabrics treated with 40 ppm silver hydrosol produced at 5°C and 60 ppm silver hydrosol produced at 40°C showed 100% antimicrobial activity against the gram‐positive bacterium Staphylococcus aureus . The durability of the antimicrobial property of the treated silk fabric to washing was also examined and is presented. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008