Citation: Guo Yao, Yi Gu. Synthesis and properties of novel thermotropic liquid crystalline copoly(ester-imide)s[J]. Chinese Chemical Letters, ;2009, 20(12): 1510-1513. doi: 10.1016/j.cclet.2009.07.004
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Four novel copoly(ester-imide)s based on 3,3',4,4'-biphenyltetracarboxylic dianhydride, bis(trimellitic acid anhydride) phenyl ester and di-p-aminophenyl ester of dicarboxylic acids were synthesized via two-step method in order to investigate whether two imide mesogenic units with different conformation and polarity could control the formation of LC-phase.Polarizes light microscopy (PLM) and differential scanning calorimetry (DSC) have shown that three polymers formed the nematic phase with "thread schlieren texture" and a polymer formed the nematic phase with "Inversion walls texture".
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