TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS*
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TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS*
Vol. 12, Issue 4, Pages: 337-344(1994)
Affiliations:
1. Polymer Physics Laboratory
2. Institute of Chemistry
3. Academia Sinica
4. Beijing 100080
5. Department of Chemistry
6. Zhengzhou University
7. Zhengzhou
8. Peking University
9. Beijing.
Author bio:
Funds:
DOI:
CLC:O631
Published:20 December 1994
Accepted:
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[1]吴薇,李自法,周其风,叶美玲,徐懋.TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS[J].Chinese Journal of Polymer Science,1994,{4}(04):337-344.
WU Wei, LI Zifa, ZHOU Qifeng, et al. TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS*[J]. 1994, 12(4): 337-344.
[1]吴薇,李自法,周其风,叶美玲,徐懋.TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS[J].Chinese Journal of Polymer Science,1994,{4}(04):337-344.DOI:
WU Wei, LI Zifa, ZHOU Qifeng, et al. TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS*[J]. 1994, 12(4): 337-344.DOI:
TRANSITIONS AND MODRPHOLOGY OF MAIN-CHAIN LIQUID CRYSTALLINE POLYMERS WITH X-SHAPED MESOGENS*
<正> 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.
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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