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Synthesis and properties of novel thermotropic liquid crystalline copoly(ester-imide)s |
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| Authors: | Guo Yao Yi Gu State Key Laboratory of Polymer Materials Engineering of China College of Polymer Science Engineering Sichuan University Chengdu China |
| Institution: | State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China |
| Abstract: | 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”. |
| Keywords: | Copoly(ester-imide) Inversion walls texture Mesogenic unit Thermotropic liquid crystalline |
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