BIFUNCTIONAL INITIATORS .5. PREPARATION OF POLYMERS WITH AZO LINKAGE BY USING AZO-BENZOIN INITIATORS AND THEIR USE IN BLOCK COPOLYMERIZATION


HEPUZER Y., BEKTAS M., DENIZLIGIL S., ONEN A., YAGCI Y.

JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, pp.111-115, 1993 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Publication Date: 1993
  • Title of Journal : JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY
  • Page Numbers: pp.111-115

Abstract

Polymers with labile azo groups in the main chain were prepared by free radical polymerization initiated by photodecomposition of 4,4'-azo-bis(4-cyanopentanoyl)-bis benzoin (ACPB) in methylene chloride solution at lambda=350 nm. These polymers were used as initiator for free radical polymerization of a second monomer to yield block copolymers. Free radical sites located at the chain ends were generated by the thermolysis of the azo groups present in the polymer.