Preparation and Properties Study of Itaconic Acid-based Degradable Epoxy Resin Based on Dynamic Covalent Bonds

He-Chen Liu; Xin-Xin Zhou; Song-Song Zhou; Ying Zou; Yu-Li Wang; Xiang-Qing Li

doi:10.1007/s10118-025-3427-2

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Preparation and Properties Study of Itaconic Acid-based Degradable Epoxy Resin Based on Dynamic Covalent Bonds

RESEARCH ARTICLE | Updated：2025-10-30

- Preparation and Properties Study of Itaconic Acid-based Degradable Epoxy Resin Based on Dynamic Covalent Bonds
- Chinese Journal of Polymer Science Vol. 43, Issue 11, Pages: 2009-2021(2025)
- Affiliations：
  
  a.Hebei Key Laboratory of Green and Efficient New Electrical Materials and Equipment, North China Electric Power University, Baoding 071003, China
  b.State Key Laboratory of New Energy Power System, North China Electric Power University, Beijing 102206, China
  c.China Electric Power Research Institute, Beijing 100192, China
- Author bio：
  
  xinx_zhou@163.com
- Funds：
- DOI：10.1007/s10118-025-3427-2
  CLC：
- Received：11 June 2025，
  
  Accepted：03 August 2025，
  
  Published Online：16 October 2025，
  
  Published：05 November 2025
- Accepted：
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Liu, H. C.; Zhou, X. X.; Zhou, S. S.; Zou, Y.; Wang, Y. L.; Li, X. Q. Preparation and properties study of itaconic acid-based degradable epoxy resin based on dynamic covalent bonds. Chinese J. Polym. Sci. 2025, 43, 2009–2021

He-Chen Liu, Xin-Xin Zhou, Song-Song Zhou, et al. Preparation and Properties Study of Itaconic Acid-based Degradable Epoxy Resin Based on Dynamic Covalent Bonds[J]. Chinese journal of polymer science, 2025, 43(11): 2009-2021.
Liu, H. C.; Zhou, X. X.; Zhou, S. S.; Zou, Y.; Wang, Y. L.; Li, X. Q. Preparation and properties study of itaconic acid-based degradable epoxy resin based on dynamic covalent bonds. Chinese J. Polym. Sci. 2025, 43, 2009–2021 DOI： 10.1007/s10118-025-3427-2.

He-Chen Liu, Xin-Xin Zhou, Song-Song Zhou, et al. Preparation and Properties Study of Itaconic Acid-based Degradable Epoxy Resin Based on Dynamic Covalent Bonds[J]. Chinese journal of polymer science, 2025, 43(11): 2009-2021. DOI： 10.1007/s10118-025-3427-2.

摘要

Bio-based epoxy resins incorporating dynamic ester bonds and dynamic disulfide bonds were synthesized using itaconic acid as the bio-based precursor. The resulting materials exhibit exceptional electrical insulation properties

mechanical strength

and thermal stability. Furthermore

the introduction of dynamic covalent networks significantly enhances degradation capabilities

enabling efficient decomposition under mild conditions.

Abstract

The most widely used bisphenol A-type epoxy resin (DGEBA) in electrical engineering demonstrates excellent mechanical and electrical properties. However

the insoluble and infusible characteristics of cured DGEBA make it difficult to efficiently degrade and recycle decommissioned electrical equipment. In this study

a degradable itaconic acid-based epoxy resin incorporating dynamic covalent bonds was prepared through the integration of ester bonds

and disulfide bonds

with itaconic acid as the precursor. The covalent bonding effects on the mechanical

thermal

electrical

and degradation characteristics were systematically evaluated. The experimental results revealed that the introduction of dynamic ester bonds enhanced the mechanical properties and thermal stability of the resin system

achieving a flexural strength of 141.57 MPa and an initial decomposition temperature

of up to 344.9 °C. The resin system containing dynamic disulfide bonds exhibited a dielectric breakdown strength of 41.11 kV/mm. Simultaneously

the incorporation of disulfide bonds endowed the epoxy resin with remarkable degradability

enabling complete dissolution within 1.5 h at 90 °C in a mixed solution of dithiothreitol (DTT) and

-methylpyrrolidone (NMP). This research provides a valuable reference for the application of itaconic acid-based vitrimer with dynamic covalent bonds in electrical materials

contributing to the development and utilization of environmentally friendly electrical equipment.

关键词

Keywords

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