基于甲壳型液晶高分子构筑的离子液晶聚合物的设计、合成与表征
esign，Synthesis And Characterization of The Ionic Liqiud Crystal Polymer (ILCP) Contained Imidazolium Based on The Mesegen-Tacketed Liquid Crystalline Polymers
本文设计并通过自由基聚合制备了一中新型的基于甲壳型液晶高分子，侧链含有咪唑盐的离子液晶聚合物。单体及聚合物的结构通过核磁共振氢谱(1H NMR)、碳谱(13C NMR)、红外(IR)的表征得到确认。同时，通过差示扫描量热仪(DSC)、偏光显微镜(PLM)以及一维广角X射线衍射(1D WARD)对聚合物的相转变及液晶行为进行了表征。实验结果显示，该聚合物在整个升温过程中均仅显示出一个烷烃链结晶熔融转变，无其它明显相转变。该聚合物在偏光显微镜下能显示出明显的双折射现象，并且在升温过程中不消失直至聚合物分解，这说明其液晶相温度区间较宽。1D WARD测试结果显示，该离子液晶聚合物能形成稳定的近晶相结构而近晶结构，并且周期d值为5.17 nm。
In this paper, a novel Ion Liquid Crystal Polymer (ILCP) contained imidazolium based on the Mesegen-Tacketed liquid crystalline, poly(2,5-bis{[m-(4-butoxy-4′-imidazolium phenyl) 12-alkyl] oxy carbonyl} styrene bis (fluoroborate) salts) (denoted as P12-6?BF4), was successfully synthesized via radical polymerization. The chemical structures of the monomer was confirmed by 1H NMR, 13C NMR and fourier transform infrared spectroscopy (FTIR). The thermal stability had been investigated by thermogravimetric analysis (TGA). It had been demonstrated that this ILCP had excellent thermal stability. The phase transitions and liquid-crystalline behavior of the polymer was investigated by differential scanning calorimetry (DSC), polarized light microscope (PLM) and one-dimensional wide-angle X-ray diffraction (1D WAXD). We found that the ILCP could form stable smectic structures (lamellar structures), and the d-spacing of (01) for P12-6?BF4 was 5.17 nm.
谢鹤楼、颜娇娇
高分子化合物工业有机化学工业
关甲壳型液晶高分子离子液晶聚合物咪唑盐液晶行为
Mesogen-Jacketed Liquid Crystalline Polymers (MJLCPs)Ionic Liquid Crystal Polymers (ILCP)ImidazoliumLiquid Crystalline Behaver
谢鹤楼,颜娇娇.基于甲壳型液晶高分子构筑的离子液晶聚合物的设计、合成与表征[EB/OL].(2014-09-04)[2025-08-09].http://www.paper.edu.cn/releasepaper/content/201409-41.点此复制
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