Self-healing, High-resilience, and UV-curable Polyurethane-urea Elastomers Enabled by Dual Crosslinked Networks

Meng-Yuan Cai; Sao Su; Wen-Tao Du; Rui-Jie Xu; Hong-Ping Xiang

doi:10.1007/s10118-026-3782-7

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Self-healing, High-resilience, and UV-curable Polyurethane-urea Elastomers Enabled by Dual Crosslinked Networks

RESEARCH ARTICLE | Updated：2026-08-28

- Self-healing, High-resilience, and UV-curable Polyurethane-urea Elastomers Enabled by Dual Crosslinked Networks
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-12(2026)
- Affiliations：
  
  School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- Author bio：
  
  Xuruijie@gdut.edu.cn (R.J.X.)
  Xianghongping@gdut.edu.cn (H.P.X.)
- Funds：
- DOI：10.1007/s10118-026-3782-7
  CLC：
- Received：06 May 2026，
  
  Accepted：10 June 2026，
  
  Online First：28 August 2026，
  
  Published：2026-07
- Accepted：
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Cai, M. Y.; Su, S.; Du, W. T.; Xu, R. J.; Xiang, H. P. Self-healing, high-resilience, and UV-curable polyurethane-urea elastomers enabled by dual crosslinked networks. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3782-7

Meng-Yuan Cai, Sao Su, Wen-Tao Du, et al. Self-healing, High-resilience, and UV-curable Polyurethane-urea Elastomers Enabled by Dual Crosslinked Networks[J/OL]. Chinese Journal of Polymer Science, 2026, 441-12.
Cai, M. Y.; Su, S.; Du, W. T.; Xu, R. J.; Xiang, H. P. Self-healing, high-resilience, and UV-curable polyurethane-urea elastomers enabled by dual crosslinked networks. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3782-7 DOI：

Meng-Yuan Cai, Sao Su, Wen-Tao Du, et al. Self-healing, High-resilience, and UV-curable Polyurethane-urea Elastomers Enabled by Dual Crosslinked Networks[J/OL]. Chinese Journal of Polymer Science, 2026, 441-12. DOI： 10.1007/s10118-026-3782-7.

摘要

Abstract

Self-healing polyurethane (PU) elastomers will greatly extend the service life of key components

reduce maintenance costs

and promote sustainability. However

dense hydrogen bonds cannot quickly recover after stretching

causing permanent deformation

while high-temperature and long-duration curing are required for their crosslinking. Therefore

dual crosslinked networks are designed herein to achieve self-healable

high-resilience and UV-curable polyurethane-urea elastomers (PUU-SS-Zn)

using polycarbonate diol (PCDL) as the soft segment for entropic elasticity

cystamine (Cy) as a chain extender for disulfide bonds and urea-linked hydrogen bonds

2-hydroxyethyl acrylate (HEA) as end-capping groups for rapid UV-curing

ZnCl

for metal coordination bonds. The resultant elastomers are UV-cured within 100 s

exhibit a transmittance

92%

tensile strength of 11.8 MPa

and elongation at break of 2423%. More importantly

it achieves nearly 100% resilience at 500% strain within 5 s

realizes 99.6% resilience at 1000% strain within 5 min

and maintains 90.2% after multiple cycles. Surface scratches disappear within 30 m

in at 60 °C

and the self-healing efficiency reaches 93% after 8 h at 80 °C. This self-healable

high-resilience and UV-curable polyurethane-urea elastomer shows great application potentials in flexible sensors and wearable devices.

关键词

Keywords

references

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