Kinetics of the polymerization of isoprene with isopropoxyneodymium dichloride/triethylaluminium binary lanthanide catalyst system

被引：3

作者：

Cai, XP

Gong, Z

Wang, FS

Zhu, XH

机构：

[1] ACAD SINICA,CHANGCHUN INST APPL CHEM,CHANGCHUN 130022,PEOPLES R CHINA

[2] JILIN CHEM & IND CORP,RES INST,JILIN 132021,PEOPLES R CHINA

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1996年 / 197卷 / 04期

关键词：

D O I：

10.1002/macp.1996.021970422

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetics of the polymerization of isoprene with the heterogeneous rare earth catalyst system isopropoxyneodymium dichloride/triethylaluminium (Nd(OPri)Cl-2-AlEt(3)) was examined in a specially designed dilatometer. The rate of polymerization is expressed as R(p) approximate to -d[M]/dt = k'(p)[Nd](1.40)[M]. The main kinetical parameters such as the concentration of active propagating chain, the efficiency of lanthanide catalyst used (ELCU), the absolute rate constant of propagation as well as the average life time of growing chains, were determined at 30 degrees C, 40 degrees C, 45 degrees C and 50 degrees C.

引用

页码：1449 / 1458

页数：10