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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
(a) Schematic diagram of the 90° peel test; (b) the 90° peel strength of AMPS hydrogels modified with different comonomers; (c) photos of the hydrogel–glass interface during peeling test; (d) adhesion of the AAm20 hydrogel on different materials.