Controlled anionic polymerization of hexamethylcyclotrisiloxane. Model linear and miktoarm star co- and terpolymers of dimethylsiloxane with styrene and isoprene

Vasilios Bellas, Hermis Iatrou, Nikolaos Hadjichristidis

Research output: Contribution to journalArticlepeer-review

161 Scopus citations

Abstract

Controlled polymerization of hexamethylcyclotrisiloxane was achieved by carrying out the polymerization first at room temperature to about 50% conversion and then at -20 °C until complete conversion in order to avoid side reactions. The poly(dimethylsiloxane)s produced show narrow molecular weight distributions (Mw/Mn≤1.1). Using this approach, a model linear triblock copolymer PS-b-PDMS-b-PS, as well as 3-miktoarm star co- and terpolymers of the (PDMS)(PS)2 and (PDMS)(PS)(PI) type, where PS is polystyrene, PI is polyisoprene, and PDMS is poly(dimethylsiloxane), have been prepared.

Original languageEnglish (US)
Pages (from-to)6993-6997
Number of pages5
JournalMacromolecules
Volume33
Issue number19
DOIs
StatePublished - Sep 19 2000

ASJC Scopus subject areas

  • Materials Chemistry

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