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Phase behaviour of poly(benzophenoneimide)s having n-alkyloxymethyl side chains

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Summary

A series of poly(benzophenoneimide)s(Cm-BP-PIs) having n-alkyloxymethyl side chains(-CH2O-n-CmH2m+1, m=4, 6, 8) have been examined by X-ray diffraction, differential scanning calorimetry(DSC) and polarizing optical microscopy. The samples showed basically two phase transitions and both transtion temperatures decreased with increasing side chain length. The first transitions were ascribed to glass transitions and the second ones were assigned to liquid crystal-to-isotropic transitions. Eicosane(n-C20H42) which is chemically very similar to the side chain was miscible with the side chains of C8-BP-PI, which induced depression of the glass transition temperature.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, 790-784, Pohang, Korea

    Heesub Kim, Young-Joon Choi, Jin Chul Jung & Wang-Cheol Zin

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  1. Heesub Kim
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  2. Young-Joon Choi
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  3. Jin Chul Jung
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  4. Wang-Cheol Zin
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Kim, H., Choi, YJ., Jung, J.C. et al. Phase behaviour of poly(benzophenoneimide)s having n-alkyloxymethyl side chains. Polymer Bulletin 38, 689–694 (1997). https://doi.org/10.1007/s002890050106

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  • DOI: https://doi.org/10.1007/s002890050106

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