Synthesis and Properties of Swallow-Tailed Chiral Side-Chain Liquid Crystalline Polymers

Dan-shu YAO; Xiao-chong GUO; Xu-cong WANG; Quan CHENG

doi:10.14028/j.cnki.1003-3726.2016.03.008

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Synthesis and Properties of Swallow-Tailed Chiral Side-Chain Liquid Crystalline Polymers

更新时间：2022-09-12

- Synthesis and Properties of Swallow-Tailed Chiral Side-Chain Liquid Crystalline Polymers
- Polymer Bulletin Vol. 29, Issue 3, Pages: 48-53(2016)
- 作者机构：
  
  东北大学理学院，沈阳 110004
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2016.03.008
  CLC：
- Published：20 March 2016，
  
  Received：06 July 2015，
  
  Revised：25 October 2015，
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Dan-shu YAO, Xiao-chong GUO, Xu-cong WANG, Quan CHENG. Synthesis and Properties of Swallow-Tailed Chiral Side-Chain Liquid Crystalline Polymers. [J]. Polymer Bulletin 29(3):48-53(2016)
DOI：

Dan-shu YAO, Xiao-chong GUO, Xu-cong WANG, Quan CHENG. Synthesis and Properties of Swallow-Tailed Chiral Side-Chain Liquid Crystalline Polymers. [J]. Polymer Bulletin 29(3):48-53(2016) DOI： 10.14028/j.cnki.1003-3726.2016.03.008.

摘要

合成了燕尾型液晶单体4-(3

5-二乙酰氧基)苯甲酰氧基-4’-对烯丙氧基苯甲酰氧基联苯(M)

手性液晶单体4-烯丙氧基苯甲酰氧基异丙酰氧基胆甾基酯(N)

将它们与聚甲基含氢硅氧烷接枝共聚

得到燕尾型手性侧链液晶聚合物PW

~PW

。通过红外、核磁共振、差示扫描量热、偏光显微镜和热重分析等手段对所合成单体及聚合物的结构、液晶相行为及热稳定性进行了研究。结果表明

~PW

为互变胆甾相热致液晶

升降温均呈现彩色Grandjean织构

液晶区间宽泛在102~160℃之间

5%热失重温度达303℃以上

热稳定性良好。

Abstract

The swallow-tailed monomer 4-[(3

5-diacetoxy)benzoyloxy]-4’-[(p-allyloxy)-benzoyloxy]

biphenyl (M) and the chiral monomer 4-(allyloxybenzoyloxy) isopropionate cholesteryl (N) were synthesized and a new kind of swallow-tailed chiral side-chain liquid crystalline polymers PW

~PW

was prepared by graft polymerization ofM and N using polymethylhydrosiloxane as backbone. Their chemical structures and mesomorphic phase behavior were investigated by FT-IR

HNMR

DSC

POM and TG. The results showed that PW

~PW

were thermotropic cholesteric liquid crystal and displayed grandjean texture. The mesomorphic temperature ranges were 102~160℃ and the temperatures when 5% weight loss occurred were higher than 303℃

which revealed that PW

~PW

had a high thermal stability.

关键词

燕尾型手性液晶聚合物合成

Keywords

Swallow-tailedChiralityLiquid crystalline polymerSynthesis

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