Preparation and Liquid Crystal Properties of the Poly(trimethylene carbonate) End-Capped by Cholesteryl or Diosgenin Derivatives

Xiao-xu XU; Yong-peng YU; Gui-xiang CHEN; Chao-xian CHEN; Yan-hua LU

doi:10.14028/j.cnki.1003-3726.2021.11.006

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Preparation and Liquid Crystal Properties of the Poly(trimethylene carbonate) End-Capped by Cholesteryl or Diosgenin Derivatives

更新时间：2022-08-30

- Preparation and Liquid Crystal Properties of the Poly(trimethylene carbonate) End-Capped by Cholesteryl or Diosgenin Derivatives
- Polymer Bulletin Vol. 34, Issue 11, Pages: 35-41(2021)
- 作者机构：
  
  1.辽东学院化工与机械学院,丹东 118003
  2.东北大学分子科学与工程中心,沈阳 110004
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2021.11.006
  CLC：
- Published：20 November 2021，
  
  Received：17 April 2020，
  
  Revised：02 August 2021，
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Xiao-xu XU, Yong-peng YU, Gui-xiang CHEN, Chao-xian CHEN, Yan-hua LU. Preparation and Liquid Crystal Properties of the Poly(trimethylene carbonate) End-Capped by Cholesteryl or Diosgenin Derivatives. [J]. Polymer Bulletin 34(11):35-41(2021)
DOI：

Xiao-xu XU, Yong-peng YU, Gui-xiang CHEN, Chao-xian CHEN, Yan-hua LU. Preparation and Liquid Crystal Properties of the Poly(trimethylene carbonate) End-Capped by Cholesteryl or Diosgenin Derivatives. [J]. Polymer Bulletin 34(11):35-41(2021) DOI： 10.14028/j.cnki.1003-3726.2021.11.006.

摘要

利用扩链反应活化了胆甾醇或薯蓣皂素端羟基的反应活性

制备了基于胆甾醇或薯蓣皂素衍生物的甾体化合物

并以其为引发剂引发了三亚甲基碳酸酯(TMC)的本体开环聚合反应

制备了胆甾醇或薯蓣皂素封端的聚三亚甲基碳酸酯

采用核磁(

H-NMR)、差示扫描量热仪(DSC)和偏光显微镜(POM)等手段对其结构及液晶性能进行测试表征。结果表明:胆甾基元或薯蓣皂素基的引入赋予了聚三亚甲基碳酸酯液晶性能

且液晶基元的结构对其液晶性能具有显著影响。

Abstract

To enhance the reactivity of the terminal hydroxyl groups of cholesterol or diosgenin

the cholesteryl or diosgenin derivatives were prepared by chain extension reaction

which was used as initiators to initiate the ring-opening polymerization of trimethylene carbonate (TMC). Two kinds of main-chain polycarbonate liquid crystals with different liquid crystal motifs were prepared. The structure and properties of the obtained liquid crystal polymers were tested and characterized by means of hydrogen-1 nuclear magnetic resonance (

H-NMR)

differential scanning calorimetry (DSC) and polarizing microscope (POM). The results show that the introduction of cholesteric or diosgenin gives polytrimethylene carbonate a liquid crystal property

and the structure of the liquid crystal motifs has a significant influence on its liquid crystal properties.

关键词

三亚甲基碳酸酯胆甾醇薯蓣皂素液晶聚合物

Keywords

Trimethylene carbonateCholesterolDiosgeninLiquid crystal polymer

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