Synthesis and properties of fluorine-containing poly(aryl ether oxadiazole)s

Natsuko Sato, Ken Tanaka, Shunsuke Masaki, Shinichi Yamazaki, Kunio Kimura, Al Nishichi

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8 Citations (Scopus)

Abstract

Fluorine-containing poly(aryl ether 1,3,4-ozadiazole)s were synthesized by the nucleophilic aromatic substitution reaction of 2,5-bis(2,3,4,5,6- pentafluorophenyl)1,3,4-oxadiazole and various bisphenols in the presence of potassium carbonate. The polymerizations were carried out at 30°C in l-methyl-2-pyrrolidinone to avoid the gelation caused by a crosslinking reaction at para and ortho carbons to the 1,3,4-oxidiazole ring. The obtained polymers were all pom-connected linear structures. The obtained fluorine-containing poly(aryl ether 1,3,4-ozadiazole)s showed excellent solubility and afforded tough, transparent films by the solution-casting method. They also exhibited a high glass transition temperature depending on the molecular structure, and the glass transition temperature could be controlled by the bisphenols in the range of 157-257°C. They showed good thermal stability and excellent hydrophobicity due to the incorporation of the 2,3,5,6-tetrafluoro-l,4-phenylene moiety.

Original languageEnglish
Pages (from-to)2855-2866
Number of pages12
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume45
Issue number14
DOIs
Publication statusPublished - Jul 15 2007

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Keywords

  • Fluoropolymers
  • Heteroatom-containing polymers
  • High performance polymers
  • Solubility
  • Thermal stability

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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