Surface Modification of Fluorosilicone Acrylate RGP Contact Lens by Low-Temperature Ammonia Plasma
In order to improve the surface hydrophilicity and the resistance to protein deposition of fluorosilicone acrylate RGP (rigid gas permeable) contact lens, low temperature ammonia plasma treatment was used to modify the lens surface. The changes of surface structures and properties were characterized by contact angle analyzer, X-ray photoelectron spectroscopy (XPS) and atomic force microscope (AFM). Effects of exposure time and plasma generating power on surface properties of the RGP contact lens were investigated. The surface contact angle measurements showed a great improvement of hydrophilicity after plasma treatment. XPS analysis indicated that the oxygen content and the nitrogen content increased remarkably after ammonia plasma treatment. Furthermore, the content of the hydrophilic group O-C=O/N-C=O on the surface increased and the content of the hydrophobic group CF2 decreased after plasma treatment. AFM results showed that ammonia plasma could lead to surface etching.
Ammonia Plasma Surface Treatment Fluorosilicone Acrylate X-ray Photoelectron Spectroscopy
Li REN Lianna ZHAO Shiheng YIN Yingjun WANG Hao CHEN Jia QU
College of Materials Science and Engineering, South China University of Technology,Guangzhou, 510640 Wenzhou Medical College, Wenzhou, 325035, China
国际会议
重庆
英文
1273-1277
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）