Polyoxometalate-doped Chitosan Quaternary Ammonium/Polyacrylamide Interpenetrating Hydrogels with Enhanced Mechanical and Tribological Properties

Fang Xu; Xin-Bao Han; Hao-Hao Ren; Wei-Tao Gong; Rong-Sheng Cai; Yu Li; Ming Zhang; Wen-Bo Sheng

doi:10.1007/s10118-026-3611-z

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Polyoxometalate-doped Chitosan Quaternary Ammonium/Polyacrylamide Interpenetrating Hydrogels with Enhanced Mechanical and Tribological Properties

RESEARCH ARTICLE | Updated：2026-04-24

- Polyoxometalate-doped Chitosan Quaternary Ammonium/Polyacrylamide Interpenetrating Hydrogels with Enhanced Mechanical and Tribological Properties
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-11(2026)
- Affiliations：
  
  a.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  b.College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
  c.School of Stomatology, Lanzhou University, Lanzhou 730000, China
  d.Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, China
- Author bio：
  
  zhm@licp.cas.cn (M.Z.)
  shengwb@licp.cas.cn (W.B.S.)
- Funds：
- DOI：10.1007/s10118-026-3611-z
  CLC：
- Received：03 January 2026，
  
  Revised：2026-01-30，
  
  Accepted：04 February 2026，
  
  Online First：16 April 2026，
  
  Published：2026-02
- Accepted：
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Xu, F.; Han, X. B.; Ren, H. H.; Gong, W. T.; Cai, R. S.; Li, Y.; Zhang, M.; Sheng, W. B. Polyoxometalate-doped chitosan quaternary ammonium/polyacrylamide interpenetrating hydrogels with enhanced mechanical and tribological properties. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3611-z

Fang Xu, Xin-Bao Han, Hao-Hao Ren, et al. Polyoxometalate-doped Chitosan Quaternary Ammonium/Polyacrylamide Interpenetrating Hydrogels with Enhanced Mechanical and Tribological Properties[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11.
Xu, F.; Han, X. B.; Ren, H. H.; Gong, W. T.; Cai, R. S.; Li, Y.; Zhang, M.; Sheng, W. B. Polyoxometalate-doped chitosan quaternary ammonium/polyacrylamide interpenetrating hydrogels with enhanced mechanical and tribological properties. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3611-z DOI：

Fang Xu, Xin-Bao Han, Hao-Hao Ren, et al. Polyoxometalate-doped Chitosan Quaternary Ammonium/Polyacrylamide Interpenetrating Hydrogels with Enhanced Mechanical and Tribological Properties[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11. DOI： 10.1007/s10118-026-3611-z.

摘要

Abstract

Combining nanomaterials with the three-dimensional hydrophilic network of hydrogels is an effective strategy for creating smart materials with enhanced mechanical properties and advanced functionalities. Herein

chitosan quaternary ammonium/polyacrylamide (QP) hydrogels with interpenetrating networks were prepared

via

in situ

method based on chain entanglement

in which polyoxometalate (POM) nanoparticles were introduced as physical crosslinking agents. This incorporation of POMs significantly improved the overall mechanical properties of the hydrogels

endowing them with high fracture energy

low hysteresis

and outstanding resilience under high water content (

90%). Owing to the strong water molecule adsorption capacity of POMs and their homogeneous and dense distribution as physical crosslinking points in the hydrogel structure

the friction coefficient was significantly reduced. Furthermore

the hydrogels exhibited good biocompatibility as well as pH- and ion-responsive behavior

while maintaining structural stability under varying external stimuli. Notably

the swelling ratio increased in high-concentration salt solutions

making them promising for applications in controlled drug release

intelligent monitoring

and especially in seawater desalination treatment.

关键词

Keywords

references

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