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Structure and thermodynamics of liquid crystalline polyesters and copolyesters

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Abstract

We have investigated the influence of aliphatic spacers with different lengths on the phase diagram of LC main chain copolyesters, based on x-ray and calorimetric measurements. The thermodynamic description is based on the assumption that considers each sequence, composed of mesogenic unit and spacer, as a “particle”. This allows to interpret the phase diagram of copolyesters as a quasi binary system. General features, such as an azeotropic point found in LC copolyesters, are related to the differences of the excess energies in LC and other phases.

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Author notes

  1. H. -G. Kilian

    Present address: Abt. Experimentelle Physik, Universität Ulm, Albert Einstein Allee 11, D-W-7900, Ulm, Germany

Authors and Affiliations

  1. Abt. Experimentelle Physik, Universität Ulm, Albert Einstein Allee 11, D-W-7900, Ulm, Germany

    B. Rehm & B. Heise

  2. Economic Information Central Ministry of Chemical Industry, Beijing, China

    B. Huang

  3. Fachbereich Physikalische Chemie, Polymere Philipps-Universität, Marburg, Germany

    W. Heitz

Authors
  1. B. Rehm
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  2. B. Huang
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  3. B. Heise
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  4. H. -G. Kilian
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  5. W. Heitz
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Additional information

Dedicated to Prof. R. Bonart on the occasion of his 67th birthday

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Rehm, B., Huang, B., Heise, B. et al. Structure and thermodynamics of liquid crystalline polyesters and copolyesters. Colloid Polym Sci 271, 529–538 (1993). https://doi.org/10.1007/BF00657983

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  • DOI: https://doi.org/10.1007/BF00657983

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