Structures and Mechanical Properties of a Thermotropic Aromatic Polyester Containing a Flexible Spacer.

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  • スペーサーを有するサーモトロピック液晶ポリエステルの構造と機械的性質
  • スペーサー オ ユウスル サーモトロピック エキショウ ポリエステル ノ コウ

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Description

A thermotropic aromatic polyester based on phenylhydroquinone and 1, 6-diphenoxy-4, 4′-dicarboxylic acid was prepared by melt-polycondensation. The polyester showed a nematic phase from 155 to 180°C. Injection-molded samples of the polyester at nematic and isotropic states gave tensile strengths of 1.1×103 and 0.8×103kgf/cmcm2, respectively. SEM observations indicated that the polyester was anisotropically oriented when it was injection-molded at a nematic state. No orientation was observed for the injection-molded sample at an isotropic state. These results suggest that it is possible to control the anisotropy of mechanical properties of thermotropic polyesters with low melting and isotropization temperatures.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 48 (6), 395-398, 1991

    The Society of Polymer Science, Japan

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