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The antibacterial fiber preparation and antibacterial activity of

Author: WangGuangLi
Tutor: CaoJianXin；YangAnJie
School: Guizhou University
Course: Materials Engineering
Keywords: Nano - antibacterial powder Antibacterial fiber Quaternary ammonium salt Antibacterial agents Textile
CLC: TB383.3
Type: Master's thesis
Year: 2008
Downloads: 70
Quote: 0
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Abstract


Using nano Fe3O4 powder , SiOx nano powder as raw materials , with their dual function activator treatment , and poly-4 - vinylpyridine polymer quaternary ammonium antimicrobial agent , polyethylene imine polymer quaternary ammonium antimicrobial agent then sticks of in nano powder surface , formation the nano Fe3O4 powder and antibacterial antibacterial efficacy of antibacterial nano- SiOx powder . The antibacterial powder Gram-positive and Gram-negative bacteria , fungi ( yeast ) has significant antimicrobial activity . Antibacterial activity and antibacterial nano - Fe3O4 powder and antibacterial nano SiOx powder and forming a quaternary ammonium salt charge and hydrophobicity , formed with hexane yl , quaternary ammonium antimicrobial agent is antibacterial highest activity, the molecular weight of the polymer against inocula antibacterial activity , the nanopowder graft modified polymeric quaternary ammonium antimicrobial agent with better graft stability . Metal salt ion can affect the antimicrobial activity of the antimicrobial nano powder , the influence of the divalent salt ions than the ion of a monovalent salt . The prepared nano antibacterial powder can be used as fabric finishing antibacterial fiber prepared with an antibacterial agent antibacterial fiber , also prepared by the blend melt spinning method . Cotton fiber, wool fiber and other natural fibers and nylon fibers, polyester fibers and other synthetic direct graft polymeric quaternary ammonium antimicrobial agent , can be formed having antimicrobial efficacy of the antimicrobial fibers . Nylon fibers, polyester fibers and other synthetic fibers in the graft before the required first pretreated by hydrolysis has been active group, the experiments show that the hydrolysis conditions for the nylon fibers with 3M HCl , 45 ° C for 3 hours as well , for polyester fiber with 1M NaOH, 45 ℃ for 3 hours . Direct graft prepared antimicrobial fiber on Gram-positive and negative bacteria, fungi ( yeast) have a significant antibacterial activity , polymer molecular weight antibacterial activity of antimicrobial agents have a greater impact , high molecular weight had alkylated polyethylene the strongest antimicrobial activity of the antimicrobial fibers of the imine -grafted the directly grafted prepared antibacterial fiber with good graft stability . The prepared antimicrobial fibers can be prepared directly through the textile or blended antimicrobial textiles .

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