４，４′‐ジフェニルジカルボン酸からの液晶ポリアリラートの熱的性質と機械的性質

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タイトル別名
  • Thermal and mechanical properties of thermotropic polyarylates from 4,4'-diphenyldicarboxylic acid.
  • 4 4 ジフェニルジカルボンサン カラ ノ エキショウ ポリアリラート ノ ネ

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説明

Polyarylates obtained from substituted hydroquinones and 4, 4′-diphenyldicarboxylic acid showed liquid crystallinities at the temperatures lower than 425°C in spite of their rigid chemical structures. For the polyarylates from chlorohydroquinone or methylhydroquinone and terephthalic acid, however, no liquid crystallinities were observed at the temperatures lower than 500°C. Fibers of polyarylates prepared from substituted hydroquinones, 4, 4′-diphenyldicarboxylic acid, and terephthalic acid showed high Young's modulus (11-95GPa).<BR>These tensile fractured fibers were composed of two types of fibrillar structures, needle-like fibrils parallel to the flow direction and plate-like fibrils transverse to the flow direction, as indicated by scanning electron microscopy. The Young's Modulus of the former structure was larger than the latter.

収録刊行物

  • 高分子論文集

    高分子論文集 43 (5), 253-259, 1986

    公益社団法人 高分子学会

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