| 两种热致性液晶酯结晶结构的X射线研究 |
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| 引用本文： | 董炎明.两种热致性液晶酯结晶结构的X射线研究[J].湘潭大学自然科学学报,1990,12(1):38-45. |
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| 作者姓名： | 董炎明 |
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| 作者单位： | 湘潭大学化学系 |
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| 摘 要： | 本文用大角X光和小角X光技术研究了两种主链型热致液晶聚芳酯。两种聚芳链的分子结构大致相同,都能形成Bragg型结晶,晶胞数参相近,晶粒尺寸也相近。但由于部分连接键的不同、导致结晶能力上有明显差异。带醚建的OHO-10晶格较疏、晶粒规整性较差、结晶度较小。OHO-10取向膜基本上为冻结的取向液晶态。带酯链的THT-10取向膜却出现与结构重复单元一致的长周期和多级衍射峰,表明形成规则性很好的结晶。
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| 关 键 词： | 液晶 聚芳酯 结晶结构 热致性 X光 |
THE X-RAY STUDIES ON CRYSTAL STRUCTURE OF TWO THERMOTROPIC LC POLYESTERS |
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| Dong yanming.THE X-RAY STUDIES ON CRYSTAL STRUCTURE OF TWO THERMOTROPIC LC POLYESTERS[J].Natural Science Journal of Xiangtan University,1990,12(1):38-45. |
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| Authors: | Dong yanming |
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| Institution: | Department of Chemistry |
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| Abstract: | Both two polyesters formed Bragg-type crystals with similar lattice constants and crystallite sizes, But the linkage difference caused the different crystallization capability OHO-10 formed ill-defined crystallites in powder sample. No obvious crystalline was found on OHO-10 oriented films. However, regular crystallites were observed not only in THT-10 powder sample, but also on THT-10 oriented films. |
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