ODD-EVEN EFFECT OF LYOTROPIC LIQUID CRYSTALLINE PROPERTIES OF AROMATIC-ALIPHATIC COPOLYAMIDES |
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Authors: | Xiao-zhong Lu Yan-qing Lian Xiao-gong Wang Xiao-gong Wang Dc-shah Liu |
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Affiliation: | Department of Chemical Engineering and School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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Abstract: | A series of aromatic-aliphatic copolyamides containing different aliphatic diamine units was synthesized by low temperature solution polycondensation. The liquid crystalline critical concentration (c*) and liquid crystalline critical temperature (T*) of these copolyamides exhibited an odd-even zigzag effect with the odd-even variation of carbon atom number in the aliphatic dimes used. |
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Keywords: | Odd-even effect Copolyamide Lyotropic Phase transition |
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