Novel initiating system based on AlCl3 etherate for quasiliving cationic polymerization of styrene

被引:29
作者
Kostjuk, SV
Dubovik, AY
Vasilenkol, IV
Mardykin, VP
Gaponik, LV
Kaputsky, FN
Antipin, LM
机构
[1] Belarusian State Univ, Phys Chem Problems Res Inst, Minsk 220050, BELARUS
[2] Russian Acad Sci, Inst Phys Chem, Moscow 119991, Russia
关键词
D O I
10.1007/s00289-004-0280-2
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Quasiliving cationic polymerization of styrene was obtained in the system 2-phenyl-2-propano-/AlCl3.OBu2/Bu2O in a mixture of 1,2-dichloroethane and n-hexane (55:45 viv) at -15degreesC. The molecular weights of the polymers (M-n) increased in direct proportion to the monomer conversion. However, the experimental M(n)s are essentially higher than theoretical ones, indicating that slow initiation relative to propagation takes place. The molecular weight distributions were broad (M-w/M(n)similar to2.5), probably due to the slow initiation and slow exchange between reversibly terminated and propagating species.
引用
收藏
页码:227 / 234
页数:8
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