| TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS |
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| 作者姓名： | 吴薇 李自法 周其风 叶美玲 徐懋 |
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| 作者单位： | Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Department of Chemistry，Zhengzhou University，Zhengzhou，Department of Chemistry，Peking University，Beijing.，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China(Grant No.29,070,196)and the Science Foundation of Polymer Physics Laboratory,Academia Sinica. |
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| 摘 要： | The transitions and morphology of a series of main-chain liquid crystalline polymer with X-shaped mesogens were studied by means of DSC,SALS and polarizing microscopy techniques. Aneven-odd effect was observed for samples with different size of the substituents on the mesogenends. The isotropization process was similar to that of main-chain polymers with rod-likemesogens. No crystallization was detected for specimens cooling down from their isotropic meltstate. However two of the samples may crystallize in cooling process directly from the liquidcrystalline state.
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| 收稿时间： | 1993-06-08 |
TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS* |
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| WU Wei,LI Zifa,ZHOU Qifeng,YE Meiling,XU Mao.TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS[J].Chinese Journal of Polymer Science,1994,0(4):337-344. |
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| Authors: | WU Wei LI Zifa ZHOU Qifeng YE Meiling XU Mao |
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| Institution: | Polymer Physics Laboratory; Institute of Chemistry; Academia Sinica; Beijing; Department of Chemistry; Zhengzhou University; Zhengzhou; Peking University; Beijing |
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| Abstract: | The transitions and morphology of a series of main-chain liquid crystalline polymer with X-shaped mesogens were studied by means of DSC,SALS and polarizing microscopy techniques. Aneven-odd effect was observed for samples with different size of the substituents on the mesogenends. The isotropization process was similar to that of main-chain polymers with rod-likemesogens. No crystallization was detected for specimens cooling down from their isotropic meltstate. However two of the samples may crystallize in cooling process directly from the liquidcrystalline state. |
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| Keywords: | Liquid crystalline polymer X-shaped mesogen Transition Morphology |
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