Efficient Synthesis and Performance Study of Poly(dissymmetric diester)s Containing Saturated Alkane and Aromatic Structures

Ye-qi Du; Xin-yan Liu; Jin-bo Hu; Ran-long Duan; Yan-long Liu; Xin-chao Bian; Xue-si Chen

doi:10.11777/j.issn1000-3304.2024.24165

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Efficient Synthesis and Performance Study of Poly(dissymmetric diester)s Containing Saturated Alkane and Aromatic Structures

Research Article | 更新时间：2025-01-24

- Efficient Synthesis and Performance Study of Poly(dissymmetric diester)s Containing Saturated Alkane and Aromatic Structures
- Acta Polymerica Sinica Vol. 56, Issue 2, Pages: 232-241(2025)
- 作者机构：
  
  1.中国科学院长春应用化学研究所生态高分子材料重点实验室长春 130022
  2.中国科学技术大学应用化学与工程学院合肥 230026
- 作者简介：
  
  Xin-chao Bian, E-mail: xcbian@ciac.ac.cn
  Xue-si Chen, E-mail: xschen@ciac.ac.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2024.24165
  CLC：
- CSTR：32057.14.GFZXB.2024.7278
- Published：20 February 2025，
  
  Published Online：29 October 2024，
  
  Received：16 July 2024，
  
  Accepted：2024-08-09
- 稿件说明：
移动端阅览
YE-QI DU, XIN-YAN LIU, JIN-BO HU, RAN-LONG DUAN, YAN-LONG LIU, XIN-CHAO BIAN, XUE-SI CHEN. Efficient Synthesis and Performance Study of Poly(dissymmetric diester)s Containing Saturated Alkane and Aromatic Structures. [J]. Acta polymerica sinica, 2025, 56(2): 232-241.
DOI：

YE-QI DU, XIN-YAN LIU, JIN-BO HU, RAN-LONG DUAN, YAN-LONG LIU, XIN-CHAO BIAN, XUE-SI CHEN. Efficient Synthesis and Performance Study of Poly(dissymmetric diester)s Containing Saturated Alkane and Aromatic Structures. [J]. Acta polymerica sinica, 2025, 56(2): 232-241. DOI： 10.11777/j.issn1000-3304.2024.24165. CSTR： 32057.14.GFZXB.2024.7278.

摘要

非对称交酯合成效率低，开环聚合(ROP)产物分子量小，因此很少有研究报道聚非对称交酯的流变行为与力学性能. 本研究采用

-二异丙基乙胺(DIPEA)作为缚酸剂，通过均相反应体系高效合成了多种非对称交酯，经ROP得到数均分子量70 kg/mol的聚非对称交酯；并对聚合物的化学结构、热学性能、流变行为和力学性能进行了表征. 热学测试和力学性能测试结果表明5种聚酯材料均为非晶聚合物，在单体结构中引入高支化度饱和烷烃取代基和芳香族取代基可以提高聚合物玻璃化转变温度，而聚合物侧链的低支化度饱和烷烃取代基会降低其玻璃化转变温度并提高断裂伸长率. 流变测试结果表明，不同取代基的聚非对称交酯的零切黏度均低于聚乳酸，并且聚合物的缠结分子量受取代基影响. 本研究为聚酯材料结构设计与性能调控提供了有益参考.

Abstract

The synthesis efficiency of dissymmetric diesters is low

and the molecular weight of the ring-opening polymerization (ROP) products is small; hence

there are few studies reporting the rheological and mechanical properties of poly(dissymmetric diester)s. In this study

-diisopropylethylamine (DIPEA) was used as a base to efficiently synthesize various dissymmetric diesters through a homogeneous reaction system. The ROP yielded poly(dissymmetric diester)s with a number average molecular weight of 70 kg/mol. The chemical structure

thermal properties

rheological properties

and mechanical properties of the polymers were characterized. Thermal and mechanical testing results indicated that all the five polyester materials were amorphous. The introduction of highly branched saturated alkane substituents and aromatic substituents into the monomer structure increased the glass transition temperature of the polymers

while low-branched saturated alkane substituents in the polymer side chains decreased the glass transition temperature and increased the elongation at break. Rheological tests showed that the zero-shear viscosity of poly(dissymmetric diester)s with different substituents was lower than that of poly(lactic acid). In conclusion

this study provides a valuable reference for the structural design and performance regulation of polyester materials.

关键词

聚乳酸非对称交酯改性

Keywords

PolylactideDissymmetric diestersModification

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