Design of Bismaleimide Crosslinking Agent and Its Application in PCL Irradiation Crosslinking

Cui-shan Qian; Rui-jie Xu; Cai-hong Lei; Jia-yi Xie

doi:10.11777/j.issn1000-3304.2026.25323

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Design of Bismaleimide Crosslinking Agent and Its Application in PCL Irradiation Crosslinking

更新时间：2026-03-31

- Design of Bismaleimide Crosslinking Agent and Its Application in PCL Irradiation Crosslinking
- Acta Polymerica Sinica Pages: 1-11(2026)
- 作者机构：
  
  1.广东工业大学材料与能源学院广州 510006
  2.韶关学院化学与土木工程学院韶关 512005
- 作者简介：
  
  Rui-jie Xu, E-mail: xu565786@163.com
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.25323
  CLC：
- CSTR：32057.14.GFZXB.2026.7568
- Received：28 December 2025，
  
  Accepted：03 March 2026，
  
  Online First：31 March 2026，
- 稿件说明：
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钱翠珊, 徐睿杰, 雷彩红, 谢嘉宜. 双马来酰亚胺交联剂的设计及其在聚己内酯辐照交联中的应用. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.25323.

Qian, C. S.; Xu, R. J.; Lei, C. H.; Xie, J. Y. Design of bismaleimide crosslinking agent and its application in PCL irradiation crosslinking. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.25323.
钱翠珊, 徐睿杰, 雷彩红, 谢嘉宜. 双马来酰亚胺交联剂的设计及其在聚己内酯辐照交联中的应用. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.25323. DOI： CSTR： 32057.14.GFZXB.2026.7568.

Qian, C. S.; Xu, R. J.; Lei, C. H.; Xie, J. Y. Design of bismaleimide crosslinking agent and its application in PCL irradiation crosslinking. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.25323. DOI： CSTR： 32057.14.GFZXB.2026.7568.

摘要

设计合成了1

3-丙烷双马来酰亚胺(PBMI)和4

4'-(二氨基二苯砜)双马来酰亚胺(DBMI) 2种交联剂，系统研究了5~50 kGy辐照剂量范围内两种合成交联剂和传统交联剂三烯丙基异氰脲酸酯(TAIC)对聚己内酯(PCL)交联性能的影响. 结果表明，合成的双马来酰亚胺型交联剂耐热性优异，DBMI热分解起始温度达到480 ℃，远高于TAIC和PBMI. 在辐照下三种交联剂都能使PCL有效交联，其中DBMI的每摩尔双键交联效率是TAIC的2.4倍，所形成的交联网络在高强度电子束辐照下不易被破坏. 交联后PCL的结晶度略有下降，但屈服强度随凝胶含量增加而增加，其中DBMI形成的交联网络刚性最强，屈服强度高于TAIC和PBMI交联的样品. 辐照后，交联的PCL出现形状记忆功能，形状回复率主要受交联点间分子量影响，当凝胶含量超55%时形状回复率达93%以上.

Abstract

In this study

two types of crosslinking agents

3-propane bismaleimide (PBMI) and 4

4′-(diaminodiphenyl sulfone) bismaleimide (DBMI)

were designed and synthesized. The effects of two types of synthetic crosslinking agents and a traditional crosslinking agent

triallyl isocyanurate (TAIC)

on the crosslinking properties of PCL in the irradiation dose range of 5-50 kGy were systematically studied. The results show that the synthesized bismaleimide crosslinking agent has excellent heat resistance

and the initial temperature of thermal decomposition of DBMI reaches 480 ℃. The crosslinking efficiency of DBMI per molar of double bond is 2.4 times that of TAIC

and the crosslinked network is not easily destroyed under high-intensity electron-beam irradiation. The crystallinity of PCL decreased slightly after crosslinking; however

the yield strength increased with increasing gel content. The crosslinking network formed by DBMI exhibited the strongest rigidity

and its yield strength was higher than those of the TAIC and PBMI crosslinked samples. After irradiation

the crosslinked PCL exhibited a shape memory function. The shape recovery rate is primarily affected by the molecular weight between crosslinking points. When the gel content exceeded 55%

the shape recovery rate was more than 93%.

关键词

Keywords

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