Synthesis and characterisation of telechelic poly(2,6-dimethyl-1,4-phenylene ether) for copolymerisation

J. Krijgsman, Jan Feijen, R.J. Gaymans

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)

Abstract

Telechelic poly(2,6-dimethyl-1,4-phenylene ether) (PPE) segments are interesting starting materials, for example for copolymerisation. A good method to make partly bifunctional PPE-2OH is by redistribution or depolymerisation of high molecular weight commercial PPE with tetramethyl bisphenol A. The product has a bimodal molecular weight distribution because only 70–80% of high molecular weight starting material is depolymerised. The phenolic endgroups can be modified easily by a fast and complete reaction with methyl chlorocarbonyl benzoate. The product after endgroup modification is called PPE-2T and has two terephthalic methyl ester endgroups and a molecular weight of 2000–4000 g/mol. The functionality of these PPE-2T products is around 1.8. The bimodal PPE-2OH and PPE-2T products can be separated in a high and low molecular weight fraction by selective precipitation. The low molecular weight fraction has a narrow molecular weight distribution with a polydispersity between 1.2 and 1.5.
Original languageUndefined
Pages (from-to)7055-7065
JournalPolymer
Volume44
Issue number23
DOIs
Publication statusPublished - 2003

Keywords

  • Redistribution
  • Poly(2
  • Telechelic
  • 6-dimethyl-1
  • IR-74892
  • 4-phenylene ether)
  • METIS-223532

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