文献类型：期刊文献

英文题名：Antimicrobial/Antimold Polymer-Grafted Starches for Recycled Cellulose Fibers

作者：Ziaee, Zainab[1,2];Qian, Liying[1,2,3];Guan, Yong[1,2,4];Fatehi, Pedram[1,2];Xiao, Huining[1,2,3]

机构：[1]Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada;[2]Univ New Brunswick, Limerick Pulp & Paper Ctr, Fredericton, NB E3B 5A3, Canada;[3]S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou, Guangdong, Peoples R China;[4]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：21

期号：10

起止页码：1359

外文期刊名：JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION

收录：;EI(收录号：20102813076176);WOS:【SCI-EXPANDED(收录号:WOS:000280487600007)】；

基金：The authors would like to thank Cascades Co. and Tembec Inc. for providing pulp samples. SENTINEL - Bioactive Paper and NSERC Canada are gratefully acknowledged for funding this research.

语种：英文

外文关键词：Antimicrobial; antimold; guanidine polymer; cationic starch; recycled cellulose fibers

摘要：In this work, an antimicrobial guanidine polymer (PHGH) was grafted onto starch as a carrier to form branched or grafted chains along the starch backbone. This grafting improved the antimicrobial properties and the adsorption of the starch on recycled cellulose fibers. Similar work was also conducted on bleached sulfite fibers for comparison. The results showed that the starch, grafted with 12 wt% PHGH, adsorbed more on recycled fibers than on sulfite fibers. By applying the antimicrobial-modified starch to recycled or sulfite pulps up to 20 mg/g, both antimicrobial and antimold performances of the papers were improved substantially. Additionally, the PHGH-modified starch increased the tensile index of papers, but decreased the tear index slightly. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were employed to investigate the morphologic changes of Escherichia coli bacteria and Chaetomium globosum fungi upon exposure to the PHGH-modified starch, thus demonstrating that the antimicrobial mechanism is based on the damage of bacterial membrane. (C) Koninklijke Brill NV, Leiden, 2010