聚合
四氟乙烯
高分子化学
材料科学
表面改性
甲基丙烯酸缩水甘油酯
嫁接
丙烯酸
甲基丙烯酸酯
聚四氟乙烯
化学工程
接触角
X射线光电子能谱
单体
聚合物
共聚物
复合材料
工程类
作者
Chen-Yuan Tu,Ying‐Ling Liu,Kueir‐Rarn Lee,Juin‐Yih Lai
出处
期刊:Polymer
[Elsevier]
日期:2005-08-01
卷期号:46 (18): 6976-6985
被引量:83
标识
DOI:10.1016/j.polymer.2005.05.116
摘要
Surface modification on polytetrafluoroethylene (PTFE) films was performed with sequential hydrogen plasma/ozone treatments and surface-initiated polymerization. C–H groups were introduced to the surface of PTFE films through defluorination and hydrogenation reactions under hydrogen plasma treatment. The C–H groups then served as ozone accessible sites to form peroxide groups under ozone treatment. Grafting polymerization initiating from the peroxide groups was performed on the PTFE film surface with using acrylamide, acrylic acid, glycidyl methacrylate and 2-(2-bromoisobutyryloxy)ethyl acrylate (BIEA) as monomers. With utilizing the isobutylbromide groups on the surface of PTFE-g-PBIEA film as initiators, sodium 4-styrenesulfonate (NaSS) was polymerized onto the PTFE film surface via atom transfer radical polymerization, to bring arborescent macromolecular structure to PTFE film surface. The chemical structures of the macromolecules on PTFE film surfaces were characterized with FTIR-ATR, SEM-EDX and XPS. The surface hydrophilicities of modified PTFE films were significantly enhanced with the modification.
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