Surface biomimetic modification and antibacterial activity of AZ91 magnesium alloy

被引：0

作者：

Tian, Jinhuan ^{[1
]}

Jiao, Yanpeng ^{[1
]}

Zhou, Changren ^{[1
]}

Dang, Xiangli ^{[2
]}

Ding, Shan ^{[1
]}

Li, Lihua ^{[1
]}

Li, Hong ^{[1
]}

机构：

[1] Department of Material Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou 510630, China

[2] Zhejiang Institute of Subtropical Crops, Wenzhou 325005, China

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2012年 / 26卷 / 05期

关键词：

Chlorine compounds - Biomimetics - X ray diffraction - Magnesium alloys - Bacteria - Chitosan - Interfaces (materials) - Salts - Body fluids - Scanning electron microscopy;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The quaternary ammonium salts of chitosan (HACC) were synthesized with two different degrees of substitution (DS: 29%, 48%) of quaternary ammonium by reacting chitosan with glycidyl trimethylammonium chloride. Characterization of HACC was analyzed with IR spectra and HNMR spectroscopy. A biomimetic coating was codeposited on the surface of AZ91 magnesium alloy by adding HACC of two DS into simulated body fluid (SBF). The CaP/HACC coatings were analyzed by scanning electron microscopy (SEM) and X ray diffraction (XRD). The coatings have different crystal types. The results of antibacterial assays show that the CaP/HACC coatings have more antimicrobial activity to Staphylococcus aureus than CaP/CS coatings. The absorbances at the 6th hour show that the bacterial inhibition rate of four samples exceeds 90%. The absorbances at the 24th hour show that the samples obtained by adding the HACC of lower concentration into simulated body fluid have better antimicrobial effect and their bacterial inhibition rate reaches 98%. © right.

引用

页码：449 / 455