Synthesis and Properties of Bio-based Silicone-containing Copolyester Elastomers and Their Composites

Meng-ting Liu; Jia-xin Zhao; Hao Zhang; Hai-lan Kang

doi:10.11687/j.issn1003-3726.2026.26278

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Synthesis and Properties of Bio-based Silicone-containing Copolyester Elastomers and Their Composites

Research Article | 更新时间：2026-10-29

- Synthesis and Properties of Bio-based Silicone-containing Copolyester Elastomers and Their Composites
- Polymer Bulletin Pages: 1-11(2026)
- 作者机构：
  
  沈阳化工大学材料学院　辽宁省橡胶弹性体重点实验室　辽宁省高分子材料应用技术重点实验室　　沈阳 110142
- 作者简介：
- 基金信息：
- DOI：10.11687/j.issn1003-3726.2026.26278
  CLC：
- Received：30 May 2026，
  
  Accepted：30 June 2026，
  
  Published：2026-10
- 稿件说明：
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刘孟婷, 赵家鑫, 张昊, 康海澜. 生物基含硅共聚酯弹性体及其复合材料的合成与性能. 高分子通报

Liu, M. T.; Zhao, J. X.; Zhang, H.; Kang, H. L. Synthesis and properties of bio-based silicone-containing copolyester elastomers and their composites. Polymer Bulletin (in Chinese
刘孟婷, 赵家鑫, 张昊, 康海澜. 生物基含硅共聚酯弹性体及其复合材料的合成与性能. 高分子通报 DOI： 10.11687/j.issn1003-3726.2026.26278.

Liu, M. T.; Zhao, J. X.; Zhang, H.; Kang, H. L. Synthesis and properties of bio-based silicone-containing copolyester elastomers and their composites. Polymer Bulletin (in Chinese DOI： 10.11687/j.issn1003-3726.2026.26278.

摘要

为突破传统聚酯材料性能瓶颈、拓展其应用范围，以羟基封端的聚硅氧烷(PDMS)为功能单元，结合其他生物基单体，通过熔融缩聚反应成功合成了一系列生物基含硅聚酯(PPPBSS)弹性体，并制备其复合材料(PPPBSS/SiO

)。研究了PDMS含量对PPPBSS弹性体结构–性能的调控作用，同时考察了PPPBSS/SiO

的力学性能。采用红外光谱和核磁共振氢谱表征了PPPBSS的化学结构和组成。结果表明，随着PDMS含量的增加，PPPBSS弹性体的玻璃化转变温度(

)从–49 °C下降至–55 °C；5%热失重温度(

)在PPPBSS-3时达到最大值为354 °C，同时其数均分子量(

)变化范围为1.27×10

~6.42×10

g/mol；对于PPPBSS/SiO

复合材料，其拉伸强度和定伸强度均有所下降，但PPPBSS-2/SiO

的力学性能仍保持为4.6 MPa。本研究的PPPBSS弹性体属于含硅聚酯材料体系，在保留聚酯材料优异力学性能的前提下，由于PDMS的引入，其热稳定性与耐低温性能显著得到提升，为聚酯材料在极端环境下的工程化应用奠定了结构与性能基础。

Abstract

To overcome the inherent performance limitations of conventional polyester materials and expand their potential application range

a series of bio-based siloxane-containing polyester elastomers (PPPBSS) were synthesized

via

melt polycondensation using hydroxyl-terminated polydimethylsiloxane (PDMS) as a flexible functional segment together with bio-based monomers. Subsequently

PPPBSS/SiO

composites were fabricated to further investigate their mechanical performance. The effects of PDMS content on the structure and properties of PPPBSS elastomers were systematically studied. The chemical structures of the synthesized elastomers were confirmed using Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (

H-NMR) spectroscopy. The results indicate that increasing the PDMS content leads to a gradual decrease in the number-average molecular weight (

) of PPPBSS from 6.42×10

g/mol to 1.27×10

g/mol. Meanwhile

the glass transition temperature (

) decreases from –49 °C to –55 °C

demonstrating enhanced chain flexibility and improved low-temperature performance. The temperature at 5% weight loss (

) initially increases and then decreases with increasing PDMS content

reaching a maximum value of 354 °C for PPPBSS-3

indicating improved thermal stability. For the PPPBSS/SiO

composites

both tensile strength and tensile modulus decrease as the PDMS content increases

with the tensile strength of PPPBSS-2/SiO

decreasing to 4.6 MPa. Overall

the incorporation of PDMS effectively enhances the flexibility and thermal stability of the polyester elastomers while maintaining acceptable mechanical properties. These findings demonstrate the potential of bio-based siloxane-containing polyester elastomers for applications requiring excellent low-temperature flexibility and thermal resistance unde

r demanding service conditions.

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references

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