Ni（naph）_2─Al（i—Bu）_3─BF_3·ROH体系催化丁二烯聚合Ⅱ聚合动力学  

BUTADIENE POLYMERIZATION WITH Ni(naph)_2 Al(i Bu)_3 BF_3· ROH CATALYTIC SYSTEM Ⅱ KINETICS OF POLYMERIZATION

作　　者：郑友群[1] 邹君[1] 张书华 仲崇祺[1] 陈滇宝[1] 唐学明[1] 

机构地区：[1]青岛化工学院高材系

出　　处：《弹性体》1994年第3期5-12,共8页China Elastomerics

基　　金：国家自然科学基金

摘　　要：研究了Ｎｉ（ｎａｐｈ）２─Ａｌ（ｉ—Ｂｕ）３─ＢＦ３·ＲＯＨ催化体系引发了二烯聚合的动力学行为，得到了不同条件下的各动力学参数、表现活化能和频率因子，从动力学角度研究了分子量调控机理。The kinetics of butadiene polymerization with Ni (naph) 2-Al(i-Bu)3-BF3·ROH catalytic system was investigsted.The results revealed that the system behaved as a kind of polymeric system with quick initiation,steppy propagation and no termination. In the incipient period of polymerization,the order of polymeric velocity to monomer concentration was 1;there existed chain transfer reactions to monomer and BF3·ROH,which accounted to be 59. 3 % and 40. 7% of total transferation opportunities respectively and the order of each one was 1 approximately. The apparent activation energy was 19. 7 KJ/mol, which was the lowest value of all Nickel catalystes that ever discovered. The Al/B mole ratio was the key factor controlling both the polymeric activity and the molecular weight.

关 键 词：镍 催化剂 聚丁二烯 动力学 

分 类 号：O632.14[理学—高分子化学]