| 含手性基元的侧链液晶聚合物的合成与性能表征 |
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| 引用本文： | 何晓智,周群华,赵静,田梅,张宝砚.含手性基元的侧链液晶聚合物的合成与性能表征[J].高分子材料科学与工程,2011(9):25-27,32. |
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| 作者姓名： | 何晓智 周群华 赵静 田梅 张宝砚 |
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| 作者单位： | 东北大学分子科学与工程中心;郑州澍青医学高等专科学校 |
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| 基金项目： | 东北大学基本科研业务费(N090405005) |
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| 摘 要： | 文中设计与合成了国内未见报道的单体M1、M2和系列手性液晶聚合物。通过差示扫描量热(DSC)、偏光显微分析(POM)、广角X射线衍射、旋光仪等测试手段研究了单体M1和手性液晶聚合物液晶性能。结果表明,M1为向列型液晶单体,M2为手性非液晶单体。聚合物P2~P4呈现近晶A相,P5,P6为胆甾相,P7的液晶性能已不明显,聚合物P8已没有液晶性能。具有宽的液晶相范围,液晶相范围均高于140℃。随着手性单体M2含量(0%~50%)的增加,聚合物的玻璃化转变温度、清亮点温度、液晶相范围均呈现降低趋势。
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| 关 键 词： | 手性 近晶相 玻璃化温度 聚合物 合成 |
Synthesis and Characterization of Side-Chain Liquid Crystalline Polymers Containing Chiral Agent |
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| Xiaozhi He,Qunhua Zhou,Jing Zhao,Mei Tian,Baoyan Zhang.Synthesis and Characterization of Side-Chain Liquid Crystalline Polymers Containing Chiral Agent[J].Polymer Materials Science & Engineering,2011(9):25-27,32. |
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| Authors: | Xiaozhi He Qunhua Zhou Jing Zhao Mei Tian Baoyan Zhang |
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| Affiliation: | 1(1.Center for Molecular Science and Engineering,Northeastern University,Shenyang 110004,China;2.Zheng Zhou Shu Qing Medical College,Zhengzhou 450064,China) |
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| Abstract: | Monomers: nematic monomer M1 and chiral monomer M2 were synthesized and a series of polymers were prepared by graft polymerization of M1 and M2 using polymethylhydrosiloxane as backbone.The mesomorphic properties were investigated by differential scanning calorimetry(DSC),polarizing optical microscopy(POM) and X-ray diffraction measurements(XRD).Polymer P2～P4 show chiral smectic phase,P5,P6 shows cholesteric phase,P7 exhibits bad properties,P8 doesn′t have a liquid crystal phase.The range of the mesogenic phase is more than 140 ℃.As the concentration of chiral agent M2(0～50%)increasing,the glass transition temperatures,clearing points and the range of temperature of the polymer decrease. |
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| Keywords: | chirality smectic phase glass temperature polymer synthesis |
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