Synthesis of triblock and random copolymers of 4- acetoxystyrene and styrene by living atom transfer radical polymerization

Bo Gao, Xianyi Chen, Bela Ivan, Jørgen Kops, Walther Batsberg

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Triblock copolymers containing polystyrene (PSt) and poly(4-acetoxystyrene) (PAcOSt) segments have been prepared by atom transfer radical polymerization (ATRP). In the first step one of the two monomers was polymerized in bulk using the initiating system alpha,alpha'-dibromo-p-xylene/CuBr/2,2'-bipyridine (1/1/3). Subsequently the resulting telechelic polymers with active bromo end group structures were used as macroinitiators for the polymerization of the second monomer under ATRP conditions. This process gave PAcOSt-PSt-PAcOSt and PSt-PAcOSt-PSt triblock copolymers with predetermined molecular weights and narrow molecular weight distributions. Polymerization of a mixture of equal molar amounts of the two monomers yielded a random copolymer with narrow molecular weight distribution.
Original languageEnglish
JournalPolymer Bulletin
Volume39
Issue number5
Pages (from-to)559-565
ISSN0170-0839
DOIs
Publication statusPublished - 1997

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