Kinetics of Maleic Anhydride Hydrolysis and Its Influence on the Curing Behavior of Epoxy Resin

LUO Shan-shuang; CHEN Ke-ping; CHEN Yuan; SUN Yi; XIAO Pei-shuang

doi:10.14028/j.cnki.1003-3726.2025.25.195

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Kinetics of Maleic Anhydride Hydrolysis and Its Influence on the Curing Behavior of Epoxy Resin

更新时间：2025-12-05

- Kinetics of Maleic Anhydride Hydrolysis and Its Influence on the Curing Behavior of Epoxy Resin
- Polymer Bulletin Vol. 38, Issue 12, Pages: 1835-1845(2025)
- 作者机构：
  
  1.西南科技大学材料与化学学院，绵阳 621010
  2.中国工程物理研究院化工材料研究所，绵阳 621900
  3.西南科技大学生物质材料教育部工程研究中心，绵阳 621010
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.25.195
  CLC：
- Received：11 July 2025，
  
  Accepted：16 September 2025，
  
  Published Online：06 November 2025，
  
  Published：20 December 2025
- 稿件说明：
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罗善双, 陈可平, 陈原, 孙毅, 肖培双. 顺丁烯二酸酐的水解动力学及其对环氧树脂固化行为的影响. 高分子通报, 2025, 38(12), 1835–1845.

Luo, S. S.; Chen, K. P.; Chen, Y.; Sun, Y.; Xiao, P. S. Kinetics of maleic anhydride hydrolysis and its influence on the curing behavior of epoxy resin. Polym. Bull. (in Chinese), 2025, 38(12), 1835–1845.
罗善双, 陈可平, 陈原, 孙毅, 肖培双. 顺丁烯二酸酐的水解动力学及其对环氧树脂固化行为的影响. 高分子通报, 2025, 38(12), 1835–1845. DOI： 10.14028/j.cnki.1003-3726.2025.25.195.

Luo, S. S.; Chen, K. P.; Chen, Y.; Sun, Y.; Xiao, P. S. Kinetics of maleic anhydride hydrolysis and its influence on the curing behavior of epoxy resin. Polym. Bull. (in Chinese), 2025, 38(12), 1835–1845. DOI： 10.14028/j.cnki.1003-3726.2025.25.195.

摘要

酸酐在潮湿环境中的水解反应对其在材料科学、有机合成以及工业应用中的稳定性有着至关重要的影响。本工作采用傅里叶红外光谱仪，实时监测顺丁烯二酸酐(MA)在水解过程中酸酐基团的变化，采用非等温示差扫描量热法(DSC)等手段研究了顺丁烯二酸酐的水解程度对环氧树脂固化行为的影响。实验结果表明，在水分子的作用下，酸酐会逐渐转化生成羧酸，其水解动力学符合一级反应动力学的特征；相较于未水解的顺丁烯二酸酐，水解的顺丁烯二酸酐更容易在较低的温度下实现环氧树脂的固化，且固化行为符合Sestak-Berggren动力学模型(SB(

，

))。但力学性能和动态热机械性能的结果表明，水解的顺丁烯二酸酐固化的环氧树脂的拉伸强度降低了14.3%，玻璃化转变温度降低了18 ℃，其原因是水解的顺丁烯二酸酐与环氧树脂形成更多的线型链段结构，使固化后的环氧树脂的交联结构变得稀疏，进一步导致拉伸强度和玻璃化转变温度的降低。

Abstract

The hydrolysis of anhydrides in moist environments has a considerable impact on their stability in diverse fields including materials science

organic synthesis

and industrial applications. Fourier transform infrared spectroscopy (FTIR) was employed to track the transformation of the anhydride group during the hydrolysis process of maleic anhydride (MA). The impact of the degree of MA hydrolysis on the curing characteristics of epoxy resin was investigated using non-isothermal differential scanning calorimetry (DSC). Experimental results showed that acid

anhydride can be transformed into carboxylic acid gradually under the action of water molecule

the hydrolysis kinetics conform to the characteristics of first-order reaction kinetics; Hydrolyzed maleic anhydride exhibits enhanced curing efficiency for epoxy resin compared to unhydrolyzed maleic anhydride

particularly at reduced temperatures. The curing process follows the Sestak-Berggren kinetic model SB(

). Nevertheless

assessments of mechanical and dynamic thermomechanical properties reveal a decline in tensile strength by 14.3% and a reduction in the glass transition temperature by 18 ℃ for epoxy resin cured with hydrolyzed maleic anhydride. This phenomenon can be attributed to the formation of more linear chain structures between hydrolyzed maleic anhydride and epoxy resin. Consequently

the resulting sparse crosslinked structure of the cured epoxy resin contributes to the observed decreases in tensile strength and glass transition temperature.

关键词

Keywords

references

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