Thermally induced solid-state synthesis of fluorine - Containing poly(ether oxadiazole)

Yuka Maruyama, Yukihiko Maeda, Kanji Wakabayashi, Shinichi Yamazaki, Kunio Kimura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Synthesis of poly[oxy-(2,3,5,6-tetrafluoro-1,4-phenylene)-(1,3,4-oxadiazol- 2-yl)-1,4-phenylene] (F-PEOz) was examined by nucleophilic aromatic substitution reaction of 2-(4-hydroxyphenyl)-5-pentafluorophenyl-1,3,4-oxadiazole (HPOz). Only low molecular weight F-PEOz or crosslinked insoluble polymers were obtained by the solution polymerization with bases. In contrast, thermally induced solid-state polymerization of HPOz potassium salts at 180°C for 1 h gave fully soluble F-PEOz with the yield of 84% and its reduced viscosity was 0.66 dL g-1. The longer polymerization time gave insoluble polymers due to the crosslinking reaction even in solid state. The solid-state polymerization did not undergo topochemically and it proceeded in an amorphous state. The crosslinking reaction was slightly inhibited by the solid-state polymerization. F-PEOz exhibited excellent solubility, high Tg of 246°C and good thermal stability.

Original languageEnglish
Pages (from-to)91-98
Number of pages8
JournalJournal of Applied Polymer Science
Volume118
Issue number1
DOIs
Publication statusPublished - Oct 5 2010

Keywords

  • Fluorine-containing polymer
  • Heteroatomcontaining polymer
  • High-performance polymer
  • Poly(ether oxadiazole)
  • Solid-state polymerization

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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