Tu Chen-Yuan, Liu Ying-Ling, Luo Min-Tzu, Lee Kueir-Rarn, Lai Juin-Yih
Department of Chemical Engineering, Chung Yuan University, Chungli, Taoyuan 32023, Taiwan.
Chemphyschem. 2006 Jun 12;7(6):1355-60. doi: 10.1002/cphc.200500729.
Poly(glycidyl methacrylate), PGMA, chains in linear and arborescent structures were incorporated onto surfaces of poly(tetrafluoroethylene), PTFE, films by hydrogen plasma and ozone treatment and atom transfer radical polymerization. The epoxide groups of the PGMA chains were further reacted with acetic acid (AAc), oxalic acid (XAc), allyl amine (AA), and ethylenediamine (EDN) to introduce hydroxyl and amine groups to the surfaces of the PTFE films. Surface characterizations performed by Fourier Transform infrared attenuated total reflectance (FTIR-ATR) spectroscopy and X-ray photoelectron spectroscopy (XPS) confirmed the surface modification and the chemical structure. The PGMA chains in arborescent structures show a high effectiveness for the enhancement of the adhesion of PTFE films. The adhesion of PTFE films was also significantly enhanced by ring-opening reactions of the PGMA epoxide groups with acetic acid and amine compounds. A high value of 9.5 N cm(-1) in the optimum 180 degrees peel strength test was observed with PTFE/copper assemblies.
通过氢等离子体和臭氧处理以及原子转移自由基聚合，将线性和树枝状结构的聚甲基丙烯酸缩水甘油酯（PGMA）链引入聚四氟乙烯（PTFE）薄膜表面。PGMA链的环氧基团进一步与乙酸（AAc）、草酸（XAc）、烯丙基胺（AA）和乙二胺（EDN）反应，在PTFE薄膜表面引入羟基和胺基。通过傅里叶变换红外衰减全反射（FTIR-ATR）光谱和X射线光电子能谱（XPS）进行的表面表征证实了表面改性和化学结构。树枝状结构中的PGMA链在增强PTFE薄膜的附着力方面表现出很高的有效性。PGMA环氧基团与乙酸和胺类化合物的开环反应也显著增强了PTFE薄膜的附着力。在PTFE/铜组件的最佳180°剥离强度测试中，观察到高达9.5 N cm⁻¹的值。
