Telechelic Polyisobutylene: A Facile Synthesis via the Cross-Metathesis Reaction and Trialkylborane-Containing Olefins

M. Chasmawala, Tze-chiang Chung

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

This paper describes the synthesis of telechelic polyisobutylene through the metathetical degradation of poly(isobutylene-co-butadiene) copolymer in the presence of a trialkylborane-containing acyclic olefin. Despite the relatively small amounts of butadiene units in the polymer chain, the degradation reaction proceeded fairly satisfactorily with a concomitant introduction of trialkylborane at the cleaved chain ends. The effects of various reaction times and acyclic olefin concentrations on the molecular weight of the final product were studied. The trialkylboranes thus obtained at the chain ends were quantitatively converted to the primary alcohol and iodo groups. The extent of functionalization at the chain ends was further evaluated by column chromatography and the synthesis of block copolymers of polycaprolactone and polyisobutylene.

Original languageEnglish (US)
Pages (from-to)1333-1339
Number of pages7
JournalMacromolecules
Volume28
Issue number5
DOIs
StatePublished - Sep 1 1995

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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