PHOTOCHEMICAL CATIONIC POLYMERIZATION OF CYCLOHEXENE OXIDE IN SOLUTION CONTAINING PYRIDINIUM SALT AND POLYSILANE


YAGCI Y. , KMINEK I., SCHNABEL W.

EUROPEAN POLYMER JOURNAL, vol.28, no.4, pp.387-390, 1992 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 4
  • Publication Date: 1992
  • Doi Number: 10.1016/0014-3057(92)90259-5
  • Title of Journal : EUROPEAN POLYMER JOURNAL
  • Page Numbers: pp.387-390

Abstract

The cationic polymerization of cyclohexene oxide (CHO) is initiated upon u.v. irradiation (lambda(inc) > 350 nm) of dichloromethane solutions containing N-ethoxy-2-methyl pyridinium hexafluorophosphate (EMP+ PF6-) and poly(methyl phenyl silane) or poly(dimethyl dephenyl silane). A feasible initiation mechanism involves the photogeneration of silylene biradicals and silyl radicals by extrusion and main-chain scission of the polysilanes, respectively. Oxidation of these radicals by EMP+ ions yields reactive cations capable of initiating the polymerization of CHO.