| 胆甾相小板块织构聚硅氧烷侧链液晶的合成和性能 |
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| 引用本文： | 李颖. 胆甾相小板块织构聚硅氧烷侧链液晶的合成和性能[J]. 医学教育探索, 2016, 29(1): 80-84 |
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| 作者姓名： | 李颖 |
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| 作者单位： | 西安科技大学材料科学与工程学院, 西安 710054 |
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| 基金项目： | 西部地区人才培养特别项目(留金法[2014]5049,201408615042);陕西省教育厅专项科研计划资助项目(2013JK0920);西安科技大学教育教学改革与研究项目(JG1262) |
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| 摘 要： | 通过硅氢加成反应将反式-4-丙烯基-反式-4'-丙基双环己烷(液晶基元)接枝到柔性的聚硅氧烷主链上,合成一种新型的胆甾相小板块织构聚硅氧烷侧链液晶(SCLCP),产率为82.5%。采用傅里叶变换红外光谱(FT-IR)和核磁共振(1H-NMR)对两者的分子结构进行表征,用热台偏光显微镜(POM)和X射线衍射仪(XRD)对其液晶相类型和液晶相行为进行观察和分析,用差示扫描量热仪(DSC)对其相转变温度和热性能进行分析。结果表明:SCLCP呈现胆甾相的小板块织构,液晶区间为57.33 K,高于液晶基元的液晶区间。
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| 关 键 词： | 胆甾相液晶 小板块织构 聚硅氧烷 液晶区间 |
| 收稿时间： | 2015-10-26 |
Syhthesis and Properties of Side-Chain Liquid-Crystalline Polysiloxanes Exhibiting Cholesteric Platelet Texture |
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| LI Ying. Syhthesis and Properties of Side-Chain Liquid-Crystalline Polysiloxanes Exhibiting Cholesteric Platelet Texture[J]. Researches in Medical Education, 2016, 29(1): 80-84 |
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| Authors: | LI Ying |
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| Affiliation: | College of Material Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
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| Abstract: | Side-chain liquid-crystalline polysiloxanes(SCLCP) were synthesized through hydrosilylation,grafting(trans,trans)-4-propyl-4'-propenyl-bicyclohexane on the flexible main chain of polysiloxane,and the yield was 82.5%.The molecular structures of SCLCP were confirmed by Fourier Transform Infrared spectroscopy(FT-IR) and Hydrogen-Nuclear Magnetic Resonance spectra(1H-NMR).Liquidcrystal phase and liquid crystal behavior of SCLCP were analyzed by Polarizing Optical Microscopy (POM) and X-Ray Diffraction(XRD).Phase transition temperature and thermal properties of SCLCP were analyzed by Differential Scanning Calorimetry(DSC).Results show that SCLCP exhibits cholesteric platelet texture,and the mesomorphic region is 57.33 K,which is higer than that of monomer. |
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| Keywords: | cholesteric liquid crystal platelet texture polysiloxanes mesomorphic region |
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