Study on the surface of fluorosilicone acrylate RGP contact lens treated by low-temperature nitrogen plasma |
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Authors: | Li Ren Shiheng Yin Lianna Zhao Hao Chen |
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Institution: | a School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China b Analytical & Testing Center, South China University of Technology, Guangzhou 510640, PR China c Wenzhou Medical College, Wenzhou 325035, PR China |
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Abstract: | In order to improve the surface hydrophilicity of fluorosilicone acrylate rigid gas permeable (RGP) contact lens, low temperature nitrogen plasma was used to modify the lens surface. Effects of plasma conditions on the surface structures and properties were investigated. Results indicated that the surface hydrophilicity of RGP contact lens was significantly improved after treatment. X-ray photoelectron spectroscopy (XPS) results showed that the nitrogen element was successfully incorporated into the surface. Furthermore, some new bonds such as N C O, F− and silicate were formed on the lens surface after nitrogen plasma treatment, which could result in the improvement of the surface hydrophilicity. Scanning electronic microscope (SEM) results indicated that nitrogen plasma with moderate power could make the surface smoother in some degree, while plasma with higher power could etch the surface. |
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Keywords: | 52 40 Hf |
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