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Lyotropic liquid crystalline phase of polyesteramides with different ratio of amide to ester groups in a main chain

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Summary

Various lyotropic liquid crystalline polyesteramides were prepared from 1,3-bis(4-aminobenzoyloxy)benzene, p-phenylene diamine, and terephthalic acid by changing the ratio of amide to ester groups and were observed by using a cross polarized light microscope. The range of liquid crystalline phase becomes wider with increasing the portion of amide groups in a main chain because the chain rigidity becomes higher and the polymer-solvent interaction stronger. In the case of polyesteramides with flexible spacers, the polymer with one p-phenylene group between two ester groups does not form an anisotropic phase but the polymer with the same group between amide groups shows an anisotropy.

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Authors and Affiliations

  1. Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 150, Seoul, Korea

    Young Chul Lee & In Jae Chung

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  1. Young Chul Lee
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  2. In Jae Chung
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Lee, Y.C., Chung, I.J. Lyotropic liquid crystalline phase of polyesteramides with different ratio of amide to ester groups in a main chain. Polymer Bulletin 28, 441–447 (1992). https://doi.org/10.1007/BF00297337

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  • DOI: https://doi.org/10.1007/BF00297337

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