Durable antibacterial finish on cotton fabric by using chitosan-based polymeric core-shell particles

Weijun Ye, John Haozhong Xin, Pei Li, Kam Len Daniel Lee, Tsz Leung Kwong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

96 Citations (Scopus)

Abstract

Cotton fabric with excellent antibacterial durability was obtained when treated with chitosan-containing core-shell particles without any chemical binders. These amphiphilic nanosized particles with antibacterial chitosan shells covalently grafted onto polymer cores were prepared via a surfactant-free emulsion copolymerization in aqueous chitosan. Herein, two core-shell particles, one with poly (n-butyl acrylate) soft core and another with crosslinked poly(N-isopropylamide) hard core, were synthesized and applied to cotton fabric by a conventional pad-dry-cure process. Antimicrobial activity was evaluated quantitatively using a Shake Flask Method in which the reduction of the number of Staphylococcus aureus cells was counted. The results showed that treated fabric had an excellent antibacterial property with bacterial reduction higher than 99%. The antibacterial activity maintained at over 90% reduction level even after 50 times of home laundering. The fabric surface morphology as well as the effect of latex particles with different core flexibilities on fabric hand, air permeability, break tensile strength, and elongation was investigated.
Original languageEnglish
Pages (from-to)1787-1793
Number of pages7
JournalJournal of Applied Polymer Science
Volume102
Issue number2
DOIs
Publication statusPublished - 15 Oct 2006

Keywords

  • Antibacterial activity
  • Chitosan
  • Core-shell polymers
  • Cotton fabric
  • Nanoparticles

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this