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
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.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2000年第5期49-51,56,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助课题
