ESTABLISHING MECHANISMS FOR EMULSION POLYMERIZATIONS

被引：15

作者：

CASEY, BS

MAXWELL, IA

MORRISON, BR

GILBERT, RG

机构：

[1] Departments of Physical and Theoretical Chemistry, University of Sydney, New South Wales

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 31卷

关键词：

D O I：

10.1002/masy.19900310103

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Emulsion polymerization systems are so complex that different workers often believe contradictory mechanisms for ostensibly the same system. A number of case studies are examined wherein data have been obtained that are able to refute mechanistic postulates (as distinct from supporting a mechanism by showing that a mathematical model incorporating it is able to reproduce a limited range of data). These examples are: (1) particle nucleation (refutation of micellar entry); (2) free radical desorption (refuting its unimportance for systems with insoluble monomers, and showing that the transfer/diffusion mechanism for this process is suspect); (3) entry (refutation of 100% initiator efficiency); (4) propagation (refutation of the assumption that the propagation rate coefficient (kp) drops to zero at the glass transition); and (5) termination (refutation of the assumption that dependence on lengths of each chain can always be ignored). Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：1 / 10

页数：10

共 35 条

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