Synthesis and characterization of segmented copolymers of aromatic polyether sulfone with liquid crystalline polyesters containing flexible spacers

Huey Ling Chang, Yu Ming Chang, Chain-Shu Hsu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The synthesis of segmented copolymers of aromatic polyether sulfone and liquid crystalline polyester containing flexible spacers is presented. The segmented copolymers were prepared by solution condensation of hydroxy-terminated polyether sulfone with diacid compounds 1-5 and 4,4′-dihydroxybiphenyl in a mixture of triphenylphosphine, pyridine and hexachloroethane. The obtained polymers show a glass transition at around 160 °C which belongs to the segmental motion of polyether sulfone blocks, and one or two melting transitions which belong to the thermal transitions of LCP blocks. Optical polarized microscopy verifies that the obtained segmented copolymers present a nematic liquid crystalline phase at a temperature higher than their melting transitions.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalJournal of Polymer Research
Volume4
Issue number2
DOIs
StatePublished - 1 Jan 1997

Keywords

  • Liquid crystalline polyesters
  • Polyether sulfone
  • Segmented copolymer

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