高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (6): 889.

• 论文 • 上一篇    下一篇

正丁基锂、四氢呋喃引发的丁苯共聚合(Ⅱ)——动力学及活性种的反应性

程子圣1, 余丰年1, 应圣康2   

  1. 1. 大连工学院化工系;
    2. 华东化工学院高分子材料系
  • 收稿日期:1983-01-16 出版日期:1984-12-24 发布日期:1984-12-24

Copolymerization of 1, 3-Butadiene and Styrene by n-BuLi-THF Initiation (Ⅱ)——Kinetics and Reactivity of Reactive Species

Cheng Zi sheng1, Yu Feng nian1, Ying Sheng-Kang2   

  1. 1. Dalian Institute of Technology, Dalian;
    2. East China Institute of Chemical Technology, Shanghai
  • Received:1983-01-16 Online:1984-12-24 Published:1984-12-24

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摘要： 本文提出了n·BuLi-THF引发的阴离子丁苯共聚体系中诸活性种之间的平衡及增长图式,导出了共聚组成方程,讨论了单体的表观竞聚率的含义。此外,还建立了表观增长速度常数kB和kS与[THF]的关系式,估算出一络合活性种对形成聚丁二烯链节中乙烯基结构的几率。

Abstract: As cheme of complex equilibrium and cross propagations between the living species in butadiene-styrene anionic copolymerization by n-BuLi-THFinitiation has been proposed. Accordingly, a copolymer composition equation has been derived and the implications of the apparent monomer reactivity ratio have been discussed. Moreever, the relationship between apparent rate constants (kB, kS) and the concentration of THF has been established. Finally, the probability of the vinyl group formation in poly-butadiene chain in copolymer from mono-THF coordinated reactive spe-eies has been estimated.

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