OLEFIN POLYMERIZATIONS AND COPOLYMERIZATIONS WITH ALUMINUM ALKYL-COCATALYST SYSTEMS .V. MOLECULAR WEIGHT AND MOLECULAR WEIGHT DISTRIBUTION OF POLYSTYRENE

被引:12
作者
KENNEDY, JP
机构
[1] Corporate Research Laboratory, Esso Research and Engineering Company, Linden, New Jersey
来源
JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY | 1969年 / A 3卷 / 05期
关键词
D O I
10.1080/10601326908051922
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 polymerization of styrene with the cationic initiator system AlR2Cl/RCl was investigated further. Earlier conclusions [1] were corroborated and expanded by an analysis of the number and weight average molecular weights. Alkyl halides with low (high) R‒Cl bond dissociation energies are efficient (poor) coinitiators of the polymerization of styrene. In the presence of efficient RCl coinitiators, the molecular weights strongly decrease and the molecular weight distributions strongly increase with increasing conversions (Fig. 1). With poor cointiators, only low conversions are obtained even in the presence of large amounts of AlEt2Cl. The data are discussed in terms of a previously proposed mechanism [1]. © 1969, Taylor & Francis Group, LLC. All rights reserved
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页码:885 / &
相关论文
共 4 条
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[2]   OLEFIN POLYMERIZATIONS AND COPOLYMERIZATIONS WITH ALUMINUM ALKYL-COCATALYST SYSTEMS .4. POLYMERIZATION OF STYRENE [J].
KENNEDY, JP .
JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY, 1969, A 3 (05) :861-&
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KENNEDY JP, 1966, J MACROMOL CHEM, V1, P541
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KENNEDY JP, 1968, POLYMER CHEMISTRY 1, P291