Self-crosslinking Waterborne Polyurethane with Antibacterial Performance and Solvent-free Adhesiveness

Shan-Shan Li; Sang-Qi Chen; Yi Xiao; Wen-Jie Xu; Xing-Huan Lin

doi:10.1007/s10118-026-3773-8

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Self-crosslinking Waterborne Polyurethane with Antibacterial Performance and Solvent-free Adhesiveness

RESEARCH ARTICLE | Updated：2026-09-10

- Self-crosslinking Waterborne Polyurethane with Antibacterial Performance and Solvent-free Adhesiveness
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-14(2026)
- Affiliations：
  
  College of Chemistry and Materials Science, Gannan Normal University, Ganzhou 341000, China
- Author bio：
  
  Linxinghuan@gnnu.edu.cn
- Funds：
- DOI：10.1007/s10118-026-3773-8
  CLC：
- Received：29 April 2026，
  
  Accepted：06 June 2026，
  
  Online First：10 September 2026，
  
  Published：2026-07
- Accepted：
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Li, S. S.; Chen, S. Q.; Xiao, Y.; Xu, W. J.; Lin, X. H. Self-crosslinking waterborne polyurethane with antibacterial performance and solvent-free adhesiveness. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3773-8

Shan-Shan Li, Sang-Qi Chen, Yi Xiao, et al. Self-crosslinking Waterborne Polyurethane with Antibacterial Performance and Solvent-free Adhesiveness[J/OL]. Chinese Journal of Polymer Science, 2026, 441-14.
Li, S. S.; Chen, S. Q.; Xiao, Y.; Xu, W. J.; Lin, X. H. Self-crosslinking waterborne polyurethane with antibacterial performance and solvent-free adhesiveness. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3773-8 DOI：

Shan-Shan Li, Sang-Qi Chen, Yi Xiao, et al. Self-crosslinking Waterborne Polyurethane with Antibacterial Performance and Solvent-free Adhesiveness[J/OL]. Chinese Journal of Polymer Science, 2026, 441-14. DOI： 10.1007/s10118-026-3773-8.

摘要

Abstract

Waterborne polyurethanes (WPUs) are increasingly valued for their low volatile organic compound emissions but suffer from poor water resistance and weak mechanical properties. Herein

a strategy based on covalent self-crosslinking combined with ionic crosslinking was proposed to construct a PU elastomer with excellent water resistance and antibacterial activity. This film exhibited dramatically enhanced tensile strength (12.7 MPa) and toughness (43.0 MJ/m

)

far exceeding those of non-crosslinked and single-crosslinked PU films. Notably

the chain segments with C＝O and N―H bonds assembled into hard-phase regions

enabling efficient energy dissipation through the rupture and reformation of reversible H-bonds. This WPU can serve as a recoverable

solvent-free adhesive

achieving lap shear strengths of 2.69 MPa (glass). Moreover

the excellent water resistance of WPU materials ensures a sustained high adhesion strength under wet conditions. In addition

the chlorinated film demonstrated satisfactory cytocompatibility and antibacterial efficiency. This high-performance and sustainable PU material holds great promise for biomedical applications.

关键词

Keywords

references

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