PHOTOSENSITIZED FREE-RADICAL POLYMERIZATION USING PYRIDINIUM SALTS

KAYAMAN N., ONEN A., YAGCI Y., SCHNABEL W.

POLYMER BULLETIN, vol.32, pp.589-596, 1994 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32
  • Publication Date: 1994
  • Doi Number: 10.1007/bf00973906
  • Journal Name: POLYMER BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.589-596
  • Istanbul Technical University Affiliated: Yes

Abstract

The polymerization of methyl methacrylate (MMA), ethyl acrylate (EA) , styrene (St) and 2-vinyl pyridine (VP) is initiated upon irradiation at lambda>350 nm of dichloromethane solutions containing N-ethoxy-2-methylpyridinium hexafluorophosphate (EMP+PF6-) and anthracene or thioxanthone. Initiation mechanisms involving the formation of ethoxyl radicals during the decomposition of EMP+ ions via electron transfer are proposed.