文献类型：期刊文献

英文题名：Preparation and characterization of a permanently antimicrobial polymeric material by covalent bonding

作者：Li, Shuzhao[1];Wei, Dafu[1];Guan, Yong[1];Zheng, Anna[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：51

期号：1

起止页码：120

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：;EI(收录号：20140317198015);WOS:【SCI-EXPANDED(收录号:WOS:000331916600012)】；

基金：We thank the support of The Major Program of Natural Science Fund of China (No. 5093302), Shanghai Natural Science Funds (Nos. 13ZR1411400 and 12ZR1407800), the Fundamental Research Funds for the Central Universities (No. 222201313012), and Shanghai Key Laboratory Project (No. 08DZ2230500).

语种：英文

外文关键词：Polypropylene; Permanently antimicrobial; Contact activity; Melt grafting

摘要：A permanently antimicrobial polypropylene (PP-g-PHMG) was obtained by covalently bonding 0.5% poly(hexamethylendiamine-guanidine hydrochloride) (PHMG), a guanidine-based antimicrobial polymer, based on total weight onto polypropylene (PP) matrix using a melt grafting method in supercritical CO2 (SC CO2) assisted process. Attributed to the higher grafting efficiency, the hydrophilic PHMG is uniformly dispersed in PP matrix without any aggregate, which potentially enhances the antimicrobial activity. The resulting PP-g-PHMG pellets showed quickly and efficiently antimicrobial activity against both Gram-positive and Gram-negative bacteria. Furthermore, the antimicrobial activity of the PP-g-PHMG non-woven fabrics prepared by a spun-bonded method remained even after constant water washing for 10 days, indicating its permanently antimicrobial ability via a contact activity rather than a release mechanism. In addition, animal tests were conducted to evaluate the safety of the antimicrobial PP fabric in the case of direct skin contact and water washing. (C) 2013 Elsevier Ltd. All rights reserved.