›› 2014, Vol. 5 ›› Issue (3): 140-142.

• 论著 • 上一篇    下一篇

氧气与氩气等离子体对树脂基托表面改性的对比研究

马小青1,张怀勤2,陈莹莹1,张昕1,王萌1,丁绿娟3   

  1. 1. 南京医科大学口腔医学研究所;南京医科大学附属口腔医院修复科
    2. 南京医科大学附属口腔医院
    3. 南京医科大学口腔医学研究所
  • 收稿日期:2014-04-28 修回日期:2014-06-24 出版日期:2014-09-25 发布日期:2014-09-24
  • 通讯作者: 张怀勤 E-mail:dentzhq@126.com
  • 基金资助:
    江苏高校优势学科建设工程资助项目;江苏省医学领军人才与创新团队

Comparison between O2-plasma and Ar-plasma treatment effect on PMMA

  • Received:2014-04-28 Revised:2014-06-24 Online:2014-09-25 Published:2014-09-24

摘要: 目的:对比氧气等离子体与氩气等离子体对聚甲基丙烯酸甲酯[poly(methyl methacrylate),PMMA]表面改性效果。方法:将聚甲基丙烯酸甲酯基托材料制成2 mm×10 mm×10 mm的试件24块,对照组、氧气等离子体与氩气等离子体处理组各8块,其中2块作X射线光电子能谱分析,6块作表面接触角测定。实验组标本采用氧气或氩气等离子体处理,接触角测量液为二次重蒸蒸馏水,液滴经微量进样器排出,每个标本在不同部位测量5次取平均值,采用SPSS 20.0软件对数据进行单因素方差分析。结果:氧气等离子体处理组的PMMA表面代表C-O结构的峰值最高,其次为氩气等离子体处理组,最低为对照组。表面O/C原子比,分别从0.289升至0.682和0.593。表面接触角分别从66.32°降至41.35°和46.16°。结论:氧气等离子体和氩气等离子体表面处理后,聚甲基丙烯酸甲酯表面氧原子含量增加,表面润湿性改善,氧气等离子体表面处理效果优于氩气等离子体。

Abstract: Objective: To compare the changes of chemical components and contact angles on the surface of PMMA after O2-plasma and Ar-plasma treatment. Methods: 24 test specimens were prepared from an acrylic resin denture material. The specimens were placed in a glass tubular reactor. Imposition of 60W of power created the condition under which plasma treatment was carried out for 2 min. X-ray photoelectron spectroscopy(XPS) studies and contact angle measurements were performed. Results: After O2-plasma and Ar-plasma treatment, the O/C atomic ratios increased from 0.289 to 0.682 and 0.593. Contact angles were reduced from 66.32 °to 41.35 °and 46.16° respectively. Conclusions: Within the limitations of this study, both O2-plasma and Ar-plasma treatment have effect on increasing the amount of oxygen atoms and improving wettability of PMMA. But, the effect of O2-plasma was better than that of Ar-plasma.