以2G－（i—Bu）_3Al为复合调节剂合成中乙烯基聚丁二烯

SYNTHESIS OF MEDIUM VINYL POLYBUTADIENEWITH 2G-(I-Bu)_3Al MODIFIERS

本文是以３－ＢｕＬｉ为引发剂，以２Ｇ和（ｉ－Ｂｕ）３Ａｌ为调节剂，环己烷为溶剂的丁二烯阴离子聚合．以合成中乙烯基型聚丁二烯。研究了Ａｌ／Ｌｉ与聚合反应速率及聚合物微观结构的关系。结果表明：随Ａｌ／Ｌｉ的增加，聚合速率下降，而对聚合物的微观结构影响较小。

The relation of microstructure polymers and the rate of polymerization for Al/Li ratio werestudied for the anionic POlymerization of butadiene using n-Bul-i as initiator,ZG and(i-Bu)3AIas modifiers in cyclohexane solvent to synthesis of medium vinyl polybutadiene.The resultsshowed that the polymerization rate descend with increasing Al/I-i ratio,has small amount effecton the microsturcture of polymer.The apparent rate constents and ectivation energy for propagation were given in systems.