Issue 23, 2024

An adhesion-switchable hydrogel dressing for painless dressing removal without secondary damage

Abstract

Hydrogels with strong adhesion to wet tissues are considered promising for wound dressings. However, the clinical application of adhesive hydrogel dressing remains a challenge due to the issues of secondary damage during dressing changes. Herein, we fabricated an adhesion-switchable hydrogel formed with poly(acrylamide)-co-poly(N-isopropyl acrylamide), quaternary ammonium chitosan and tannic acid. This hydrogel forms instant and robust adhesion to the skin at body temperature. However, as the temperature rises above the lower critical solution temperature (LCST), the hydrogel loses its adhesion towards the wound area due to the temperature-dependent volume phase transition of the copolymer, occurring around 45 °C. Consequently, the designed hydrogel can be easily detached from adhered tissues upon demand, providing a facile and effective method for painless dressing changes without secondary damage. This hydrogel holds great promise for long-term application in wound dressings.

Graphical abstract: An adhesion-switchable hydrogel dressing for painless dressing removal without secondary damage

Supplementary files

Article information

Article type
Paper
Submitted
25 Mar 2024
Accepted
02 May 2024
First published
09 May 2024

J. Mater. Chem. B, 2024,12, 5628-5644

An adhesion-switchable hydrogel dressing for painless dressing removal without secondary damage

Z. Yu, W. Huang, F. Wang, X. Nie, G. Chen, L. Zhang, A. Shen, Z. Zhang, C. Wang and Y. You, J. Mater. Chem. B, 2024, 12, 5628 DOI: 10.1039/D4TB00621F

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