PREPARATION OF MULTIPHASE BLOCK-COPOLYMERS BY REDOX POLYMERIZATION PROCESS .4. POLYMERIZATION OF METHYL-METHACRYLATE BY THE REDOX SYSTEM MN(III)-POLY(ETHYLENE GLYCOL) CONTAINING AZO GROUPS


CAKMAK I.

ANGEWANDTE MAKROMOLEKULARE CHEMIE, vol.224, pp.49-54, 1995 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 224
  • Publication Date: 1995
  • Doi Number: 10.1002/apmc.1995.052240105
  • Title of Journal : ANGEWANDTE MAKROMOLEKULARE CHEMIE
  • Page Numbers: pp.49-54

Abstract

Redox polymerization of methyl methacrylate using Mn(III) with poly(ethylene glycol) having azo and hydroxy functions was carried out to yield ethylene glycolmethyl methacrylate block copolymers with labile azo linkages in the main chain. These prepolymers were used to initiate free-radical polymerization of styrene through thermal decomposition of the azo groups, resulting in the formation of multiblock copolymers. Successful blocking has been confirmed by fractional precipitation, a strong change in the molecular weight, and spectral measurements.