Contact-Active Antimicrobial and Potentially Self-Polishing Coatings Based on Cellulose

被引:48
作者
Bieser, Arno M. [2 ,3 ]
Thomann, Yi [2 ,3 ]
Tiller, Joerg C. [1 ]
机构
[1] TU Dortmund, Dept Bio & Chem Engn, D-44227 Dortmund, Germany
[2] Univ Freiburg, Freiburg Mat Res Ctr, D-79104 Freiburg, Germany
[3] Univ Freiburg, Inst Macromol Chem, Dept Chem, D-79104 Freiburg, Germany
关键词
antimicrobial; biodegradable; contact-active; polyoxazoline; self-polishing; SATELLITE GROUPS; POLYMER SURFACE; DERIVATIVES; BACTERIA; DESIGN; OXIDE;
D O I
10.1002/mabi.201000306
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A contact-active antimicrobial coating is described that is only degraded in the presence of cellulase, which is an extracellular enzyme of numerous microbial strains. Antimicrobial DDA was grafted to a cellulose backbone via a polymeric spacer. The antimicrobial activity of the coatings, their biodegradability and their self-polishing potential were investigated. It was found that all coatings were antimicrobially active against Staphylococcus aureus. Coatings with high DS and long polymeric spacers degraded in water, while coatings with low DS and short spacers were not hydrolyzed even in the presence of cellulase. One coating was found to be selectively degradable by cellulase and recovered most of its antimicrobial activity after overloading and subsequent treatment with cellulase.
引用
收藏
页码:111 / 121
页数:11
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