Anti-Bacterial Property of Tussah Silk Fabric by Nano-Titanium Dioxide and Chitosan Modification

Abstract:

In order to increase the anti-bacterail property of tussah silk fabric, a nano-material dispersion system contained titanium dioxide nano-particles, chitosan, 1,2,3,4-butane tetracarboxylic acid, sodium monophosphate and surfactants was prepared. The particles in the dispersion solution have a narrow particle size distribution with average particle diameter of approximately 40 nm. Tussah silk fabric was then modified with the dispersion system using a conventional pad-dry-cure method. The structure of the modified tussah silk was characterized by X-ray photoelectron spectroscopy (XPS). The anti-bacterial efficiency of the treated tussah silk fabric with the dispersion system at a concentration of 0.2% nano-titanium dioxide and 0.5% chitosan showed over 99% of bacterial reduction against the Staphylococcus aureus（S. aureus） and gram-negative bacterium Escherichia Coli (E. Coli). In addition, the anti-bacterial reduction was maintained over 90% even after being exposed to 20 consecutive launderings.

• Periodical: Advanced Materials Research (Volume 331)
• Pages: 330-333
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.331.330
• Online since: September 2011
• Authors: Yan Hua Lu, Zhi Mei Liu
• Keywords: Anti-Bacterial Property, Chitosan (CS), Nano-Titanium Dioxide, Tussah Silk

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