聚甲基丙烯酸甲酯表面低温等离子体处理研究  

Effect of low temperature plasma treatment on the surface of polymethylmethacrylate

作　　者：张怀勤[1] 巢永烈[1] 金波[2] 方江邻[2] 

机构地区：[1]四川成都四川大学华西口腔医学修复科,610041 [2]南京大学现代分析中心

出　　处：《实用口腔医学杂志》2005年第2期225-227,共3页Journal of Practical Stomatology

基　　金：江苏省教育厅自然科学基金(OOKJD320025)

摘　　要：目的:研究等离子体表面处理聚甲基丙烯酸甲酯后,材料表面化学结构及润湿性的变化。方法:将实验材料制成 30个 10mm×10mm×2mm的试件,实验组 15个试件置于等离子体处理装置中,用氧气处理 10min,并对等离子体处理前后的标本进行X射线光电子能谱分析和接触角测量。结果:等离子体处理后,树脂表面碳氧原子比例从 1∶0. 20升至 1∶0. 29,与氧原子连接的C形成的C O结构,在整个C C和C O结构中,其百分比从25. 1%升至 34. 01%;树脂材料接触角明显下降。结论:低温等离子表面处理技术可提高树脂材料表面润湿性。Objective: To observe the changes of chemical components and wettability on the surface of polymethylmethacrylate (PMMA) following low temperature O_2 plasma treatment. Methods:30 specimens of PMMA in the size of 2 mm×10 mm×10 mm were prepared and 15 specimens were treated with low temperature O_2 plasma for ten minutes in plasma equipment. Chemical components were analysed by X-ray energy spectrum analysis (XPS) and wetting angles were measured by JJC-I wetting angle meter in two groups. Results:After low temperature O_2 plasma treatment, the atomic ratio of C ∶O changed from 1∶0.20 to 1∶0.29 and the percent of C-O in C-C increased from 25.08% to 34.01%; wetting angle was reduced from 66.3±3.5 to 48.5±2.6(P<0.05).Conclusion:The low temperature O_2 plasma treatment can be used to improve the surface wettability of PMMA.

关 键 词：等离子体 表面 树脂 

分 类 号：R783.1[医药卫生—口腔医学]