COPOLYMERIZATION KINETICS OBTAINED BY STOPPED-FLOW POLYMERIZATION

被引：5

作者：

KANG, KS ^{[1
]}

CHU, KJ ^{[1
]}

CHANG, HS ^{[1
]}

IHM, SK ^{[1
]}

机构：

[1] KOREA ADV INST SCI & TECHNOL,DEPT CHEM ENGN,POB 131,SEOUL 131,SOUTH KOREA

来源：

POLYMER BULLETIN | 1990年 / 23卷 / 02期

关键词：

D O I：

10.1007/BF00338500

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ethylene-propylene copolymerization was carried out over MgCl2-supported TiCl4 catalyst with two different reaction schemes; i.e., stopped-flow copolymerization (SFC) and continuously-purged copolymerization (CPC). The reactivity ratios for each monomer was evaluated by Fineman-Ross and Kelen-Tüdôs methods. It was found that the SFC resulted in smaller value of ethylene reactivity ratio(rE) and larger value of propylene reactivity ratio(rp) than the CPC. This seems to be attributed to the different extent of interaction between catalytic titanium sites and aluminum alkyls, i.e. active site formation and its over-reduction. © 1990 Springer-Verlag.

引用

页码：191 / 197

页数：7

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