四苯基硼季铵盐的合成和光引发性能  

Synthesis and Photoinitiation Property of Quaternary Ammonium Tetraphenylborate

作　　者：于学亚[1] 曾兆华[1] 杨建文[1] 陈用烈[1] 

机构地区：[1]中山大学化学化工学院高分子研究所,广州510275

出　　处：《应用化学》2004年第5期450-454,共5页Chinese Journal of Applied Chemistry

基　　金：广东省自然科学基金 (0 1110 4)资助项目

摘　　要：合成了含六亚甲基四胺和三乙二胺的 2种四苯基硼季铵盐 ,通过元素分析、核磁共振、紫外光谱等对其进了结构表征 ;其引发三羟甲基丙烷三丙烯酸酯 (TMPTA)紫外光固化时是氧阻聚的 ,发生的是自由基反应 ;进行了不同温度下引发TMPTA的光照DSC实验 ,发现光引发效率随温度升高而增强 ,计算出光引发聚合反应的活化能为 4 4 4kJ/mol;热重实验表明 ,二者均有很好的热稳定性。Two kinds of quaternary ammonium tetraphenylborates(QA salt-BPh_4) have been synthesized and characterized by elemental analysis, nuclear magnetic resonance spectroscopy and UV spectroscopy. The polymerization of tri- methylolpropane triacrylate(TMPTA) initiated by them under UV light illumination appeared to be radical polymerization and could be inhibited by oxygen. It was found from the results of photo-DSC of TMPTA at different temperature that the photoinitiation efficiency increased with polymerization temperature and the activation energy was calculated to be 44.4 kJ/mol. Thermogravimetry proved that the product had very good thermostability.

关 键 词：四苯基硼季铵盐 自由基聚合 光引发活性 

分 类 号：O631.22[理学—高分子化学]