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Dependence of properties of liquid crystalline aromatic copolyesters on monomer sequence-copolyesters derived from terephthalic acid, 2,7-naphthalenediol and p-hydroxybenzoic acid

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Summary

An aromatic copolyester with the ordered sequence of terephthalic acid (TA)-p-hydroxybenzoic acid (HB)-2,7-naphthalenediol (ND)-p-hydroxybenzoic acid (HB) was prepared and its properties were compared with those of the corresponding random copolyester having the same overall monomer composition. Thermal and crystallizing properties of the two polymers are quite different. The former exhibits significantly higher glass transition and melting temperatures than the latter. The former's degree of crystallinity also is much higher than the latter's. Both polymers are thermotropic and form nematic melts.

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Authors and Affiliations

  1. Chemistry Department, College of Sciences, Korea University, I-Anam Dong, 136-701, Seoul, Korea

    Jung-II Jin & Jin-Hae Chang

  2. Polymer Science and Engineering Department, Kum-Oh Institute of Technology, 730-070, Gumi City, Korea

    Jin-Hae Chang

  3. Chemical Engineering Department, Chosun University, 501-759, Kwangju City, Korea

    Byung-Wook Jo

Authors
  1. Jung-II Jin
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  2. Jin-Hae Chang
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  3. Byung-Wook Jo
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Jin, JI., Chang, JH. & Jo, BW. Dependence of properties of liquid crystalline aromatic copolyesters on monomer sequence-copolyesters derived from terephthalic acid, 2,7-naphthalenediol and p-hydroxybenzoic acid. Polymer Bulletin 20, 525–530 (1988). https://doi.org/10.1007/BF00263667

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  • DOI: https://doi.org/10.1007/BF00263667

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