节点文献
二苯胺对TiCl4/CumCl/IB阳离子聚合作用的研究
RESEARCH OF DIAMINE ON ROLE MECHANISM OF POLYISOBUTYLENE CARBOCATIONIC POLYMERIZATION
【摘要】 通过聚合物的 GPC谱图分析及紫外光谱测试 ,证明了二苯胺在 Cum Cl/ Ti Cl4、Di Cum Cl/ Ti Cl4和 H2 O/ Ti Cl4体系中 ,既能捕获质子 ,又能稳定活性中心 ,当 [DPA]达到 0 .0 3mol/ L 以上时 ,碳正离子周围被二苯胺包围 ,异丁烯不能进入 ,聚合反应不能进行。提出了 DPA在异丁烯阳离子聚合反应中的作用机理
【Abstract】 The role of trap H + proton and stabilization living center in polymerization system in which the electron donor DPA was added to the CumCl/TiCl 4 and DiCumCl/TiCl 4 and H 2O/TiCl 4 system was demonstrated by GPC traces and UV spectroscopy. When [DPA] is over 0.03 mol/L, the cationic round is surrounded by DPA, IB can not contact with carbo cationic then cationic polymerization occurs. The effecting mechanism DPA of in isobuthylene cationic polymerization were proposed.
【基金】 国家自然科学基金资助课题
- 【文献出处】 高分子材料科学与工程 ,POLYMERIC MATERIALS SCIENCE & CNGINEERING , 编辑部邮箱 ,2000年05期
- 【分类号】O631
- 【被引频次】7
- 【下载频次】87