A novel approach to prepare Zn(II)-loaded cotton fibers with antibacterial property

作者：Mary Grace; Chand Navin; Bajpai S K^*

来源：Journal of Macromolecular Science Part A-Pure and Applied Chemistry, 2008, 45(10): 795-803.

DOI：10.1080/10601320802300412

• grafting
• cotton
• zinc ions
• activation energy
• wound dressings

This study is focused on investigating the feasibility of using poly(acrylamide-co-N-vinyl-2-pyrrolidone)-grafted cotton fibers for the release of Zn(II) ions under physiological conditions.
The optimum grafting conditions for ceric ammonium nitrate induced graft-copolymerization of acrylamide and N-vinyl-2-pyrrolidone onto cotton fibers was found to include initiator concentration of 35 mM, catalyst HNO(3)concentration of 0.35 M and initiation time of 10 min. The Zn(II)-loaded grafted fibers released Zn(II) in the physiological fluid for nearly 72 h with first order diffusion constant 6.0 x 10(-4) min(-1). The release was regulated by ion-exchange mechanism and less release was observed in protein solution. The Zn (II)-loaded fibers exhibit fair antibacterial activity.

• 出版日期2008