Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation

Qiong-Jun Xu; Zhao-Yang Yuan; Chang-Cheng Wang; Hao Liang; Yu Shi; Hai-Tao Wu; Hu Xu; Jing Zheng; Jin-Rong Wu

doi:10.1007/s10118-024-3066-z

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Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation

RESEARCH ARTICLE | Updated：2024-04-12

- Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation
- Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation
- 高分子科学（英文版） 2024年42卷第5期页码：591-603
- Affiliations：
  
  State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
- Author bio：
  
  zhengjing@scu.edu.cn (J.Z.)
  wujinrong@scu.edu.cn (J.R.W.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (No. 52273210).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-024-3066-z.
- DOI：10.1007/s10118-024-3066-z
  中图分类号：
- 收稿：2023-10-12，
  
  修回：2023-11-7，
  
  录用：2023-11-8，
  
  网络首发：2023-12-07，
  
  纸质出版：2024-05-01
- Accepted：
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Xu, Q. J.; Yuan, Z. Y.; Wang, C. C.; Liang, H.; Shi, Y.; Wu, H. T.; Xu, H.; Zheng, J.; Wu, J. R. Tough semi-interpenetrating polyvinylpyrrolidone/polyacrylamide hydrogels enabled by bioinspired hydrogen-bonding induced phase separation. Chinese J. Polym. Sci. 2024, 42, 591–603

Qiong-Jun Xu, Zhao-Yang Yuan, Chang-Cheng Wang, et al. Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation[J]. Chinese Journal of Polymer Science, 2024, 42(5): 591-603.
Xu, Q. J.; Yuan, Z. Y.; Wang, C. C.; Liang, H.; Shi, Y.; Wu, H. T.; Xu, H.; Zheng, J.; Wu, J. R. Tough semi-interpenetrating polyvinylpyrrolidone/polyacrylamide hydrogels enabled by bioinspired hydrogen-bonding induced phase separation. Chinese J. Polym. Sci. 2024, 42, 591–603 DOI： 10.1007/s10118-024-3066-z.

Qiong-Jun Xu, Zhao-Yang Yuan, Chang-Cheng Wang, et al. Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation[J]. Chinese Journal of Polymer Science, 2024, 42(5): 591-603. DOI： 10.1007/s10118-024-3066-z.

摘要

Hydrogen bonding-induced phase separation strategy to construct poly(vinylpyrrolidone)/poly(acrylamide) semi-IPN hydrogels. SAXS and CLSM to study the phase separation. The unique phase-separated structure endowed the semi-IPN hydrogels with excellent mechanical properties and impact damping performance.

Abstract

Semi-interpenetrating (semi-IPN) hydrogels formed by the continuous interpenetration of cross-linked polymer network and linear non-crosslinked polymer with multifunctionality are widely used in biomedical and other fields. However

the negative impact of linear polymer on the homogeneity of the cross-linked network often leads to a decrease in the mechanical properties of semi-IPN hydrogels and severely limits their applications. Herein

a bioinspired hydrogen-bonding induced phase separation strategy is presented to construct the tough semi-IPN polyvinylpyrrolidone/polyacrylamide hydrogels (named PVP

/PAM hydrogels)

including the linear polymer polyvinylpyrrolidone (PVP) and cross-linked polyacrylamide (PAM) network. The resultant PVP

/PAM hydrogels exhibit unique phase separation induced by the hydrogen bonding between PVP and PAM and affected by the amount of substance of PVP. Meanwhile

the phase separation of PVP

/PAM hydrogels results in excellent mechanical properties with a strain of 2590%

tensile strength of 0.28 MPa and toughness of 2.17 MJ/m

. More importantly

the hydrogen bonding between PVP and PAM firstly disrupts to dissipate energy under external forces

so the PVP

/PAM hydrogels exhibit good self-recovery properties and outperform chemically cross-linked PAM hydrogels in impact resistance and damping applications. It is believed that the PVP

/PAM hydrogels with hydrogen-bonding induced phase separation possess more potential application prospects.

关键词

Keywords

references

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