合成橡胶工业 |
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六亚甲基亚氨基锂引发的丁二烯负离子聚合动力学
Kinetic study on butadiene polymerization initiated by lithiohexamethyleneimine
曹民
张春庆
王文佶
尹玲
摘 要:研究了以六亚甲基亚氨基锂(LHMI)为引发剂、环己烷为溶剂、TMEDA为极性调节剂的丁二烯自聚.其中LHMI可以预先制备,也可以在聚合体系中原位合成.当TMEDA/LHMI质量比小于2时,速率常数(Kp′′)随着TMEDA/LHMI的增大而升高.与正丁基锂引发体系的Kp′′相比,相同条件下LHMI引发体系的Kp′′变化不大,说明LHMI不起调节剂的作用. |
Recently there has been a social demand for a tire having low rolling resistance. To fulfill this demand, a modified polymer having a function group capable of interacting with carbon black has been studied. And it has been considered to be very useful to introduce a functional group at the end of a polymer by using a modified polymerization initiator, because this type of polymer may have more than one funcational group in one chain.…… |
收稿日期:2001年11月27日 出版日期:2002年3月15日 |
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