Photoinduced ionic polymerization. VII. Cationic polymerization of cyclohexene oxide in solid state

Photoinduced ionic polymerization. VII. Cationic polymerization of cyclohexene oxide in solid state Photopolymerization of cyclohexene oxide in the presence of electron acceptors was studied in a bulk system (in liquid as well as in solid states). The polymerization was proved to proceed by a cationic mechanism in both states by the effect of inhibitors. In a liquid phase the light intensity dependence of the rate of polymerization and the molecular weight distribution showed a contribution of a free ionic polymerization. Any discontinuous phenomenon in the rate as well as in the molecular weight was not discerned between liquid(above −36°C) and plastic crystal (between −36 and −81°C) phases. A quantum yield of monomer consumption as high as 8 × 103 was observed in the plastic crystal phase. Below −81°C in the normal crystal phase the rate as well as the molecular weight was remarkably suppressed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Polymer Science (In Two Sections) Wiley

Photoinduced ionic polymerization. VII. Cationic polymerization of cyclohexene oxide in solid state

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
Copyright © 1979 John Wiley & Sons, Inc.
ISSN
0360-6376
eISSN
1099-0518
D.O.I.
10.1002/pol.1979.170170320
Publisher site
See Article on Publisher Site

Abstract

Photopolymerization of cyclohexene oxide in the presence of electron acceptors was studied in a bulk system (in liquid as well as in solid states). The polymerization was proved to proceed by a cationic mechanism in both states by the effect of inhibitors. In a liquid phase the light intensity dependence of the rate of polymerization and the molecular weight distribution showed a contribution of a free ionic polymerization. Any discontinuous phenomenon in the rate as well as in the molecular weight was not discerned between liquid(above −36°C) and plastic crystal (between −36 and −81°C) phases. A quantum yield of monomer consumption as high as 8 × 103 was observed in the plastic crystal phase. Below −81°C in the normal crystal phase the rate as well as the molecular weight was remarkably suppressed.

Journal

Journal of Polymer Science (In Two Sections)Wiley

Published: Mar 1, 1979

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