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ODD-EVEN EFFECT OF LYOTROPIC LIQUID CRYSTALLINE PROPERTIES OF AROMATIC-ALIPHATIC COPOLYAMIDES
Authors:Xiao-zhong Lu  Yan-qing Lian  Xiao-gong Wang  Xiao-gong Wang  Dc-shah Liu
Affiliation:Department of Chemical Engineering and School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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.
Keywords:Odd-even effect  Copolyamide  Lyotropic  Phase transition
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