Synthesis of thermally cross-linkable fluorine-containing poly(aryl ether ketone)s I. Phenylethynyl terminated poly(aryl ether ketone)s

Kunio Kimura, Ai Nishichi, Yuhiko Yamashita

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fluorine-containing poly(aryl ether ketone)s (PEKs) derived from 2,3,4,5,6-pentafluorobenzoic acid (PFBA) exhibit outstanding solubility, thermal stability, low dielectric constant, low moisture absorption and high transparency. Hence, they are expected to be available for optical and electric materials. In such applications, excellent solubility is of great advantage for making thin film and coating. Contrary to this advantage, this is of disadvantage from a point of solvent resistance. Thermally cross-linkable fluorine-containing PEKs terminated with phenylethynyl moiety (PEK-PEP) are synthesized to improve the solvent resistance in this study. Cross-linking reaction occurs over 320°C and it brings about not only the outstanding solvent resistance but also the increase of Tg. Relationship between the cross-linking density and Tg can be fundamentally interpreted by configurational entropy theory. Furthermore, the cured PEK-PEPs possess excellent thermal stability with the 10% weight loss temperature in the range from 544 to 598°C.

Original languageEnglish
Pages (from-to)209-218
Number of pages10
JournalPolymer Journal
Volume34
Issue number3
DOIs
Publication statusPublished - 2002

Fingerprint

Fluorine
Ketones
Ether
Ethers
Thermodynamic stability
Solubility
Transparency
Permittivity
Entropy
Moisture
Thin films
Coatings
Acids
Temperature

Keywords

  • Cross-Linking
  • Fluorine-Containing Polymer
  • Phenylethynyl Group
  • Poly(aryl ether ketone)
  • Solvent Resistance
  • Thermal Stability

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

Cite this

Synthesis of thermally cross-linkable fluorine-containing poly(aryl ether ketone)s I. Phenylethynyl terminated poly(aryl ether ketone)s. / Kimura, Kunio; Nishichi, Ai; Yamashita, Yuhiko.

In: Polymer Journal, Vol. 34, No. 3, 2002, p. 209-218.

Research output: Contribution to journalArticle

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AU - Nishichi, Ai

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AB - Fluorine-containing poly(aryl ether ketone)s (PEKs) derived from 2,3,4,5,6-pentafluorobenzoic acid (PFBA) exhibit outstanding solubility, thermal stability, low dielectric constant, low moisture absorption and high transparency. Hence, they are expected to be available for optical and electric materials. In such applications, excellent solubility is of great advantage for making thin film and coating. Contrary to this advantage, this is of disadvantage from a point of solvent resistance. Thermally cross-linkable fluorine-containing PEKs terminated with phenylethynyl moiety (PEK-PEP) are synthesized to improve the solvent resistance in this study. Cross-linking reaction occurs over 320°C and it brings about not only the outstanding solvent resistance but also the increase of Tg. Relationship between the cross-linking density and Tg can be fundamentally interpreted by configurational entropy theory. Furthermore, the cured PEK-PEPs possess excellent thermal stability with the 10% weight loss temperature in the range from 544 to 598°C.

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