Surface Modification of Chitosan Membranes by Oxygen Plasma Treatment
Chitosan membranes were prepared by solvent cast method. In order to increase cell adhesion of the chitosan membranes, oxygen plasma treatment was applied to improve the hydrophilicity of the surface of chitosan membranes. The surface properties were characterized by scanning electron microscopy (SEM), contact angle analyzer, X-ray photoelectron spectroscopy (XPS). The effects of exposure time, plasma generating power, and chamber pressure on water contact angle of the chitosan membranes were investigated. The water contact angle of chitosan membranes decreased from 94.1° to 49.2° after plasma treatment. Which suggested the surfaces became more hydrophilic. XPS analysis showed that the oxygen content and the ratio of O/C increased markedly after oxygen plasma treatment. Furthermore, it was found that C-H bonds were broken with oxygen plasma treatment. C-OH group had been increased after plasma irradiation.
Chitosan Plasma Treatment X-ray Photoelectron Spectroscopy Hydropholicity
Naru ZHAO Yingjun WANG Li REN Xiaofeng CHEN
Key Laboratory of Specially Functional Materials, South China University of Technology, Ministry of Education, Guangzhou, China Biomaterials Research Center, School of Materials Science and Engineering,South China University of Technology, Guangzhou, 5106
国际会议
重庆
英文
1259-1262
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）