高灵敏、强粘附性导电水凝胶的制备及在柔性传感中的应用

doi:10.11896/cldb.24010212

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Abstract Conductive hydrogels have good application prospects in the fields of human-computer interaction and electronic skin owing to their excellent toughness and biocompatibility. However, more excellent adhesion and sensitivity are needed in practical application scenarios to get accurate response signals. In this work, a conductive hydrogel was rapidly polymerized by copolymerization of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and acrylamide (AM) through sulfhydryl attacking on the carbon-carbon double bond under ultraviolet illumination. Its adhesion strength to porcine skin reached 525 kPa and to aluminum sheet was up to 817 kPa. Different from the traditional preparation methods, the electrical conductivity of the hydrogel prepared in this work without adding any conductive fillers reaches 1.08 S/m, and the gauge factor (GF) reaches 9.28, which avoided the problems of poor mechanical properties and low sensitivity due to the uneven dispersion of conductive fillers. In addition, the hydrogel is frost-resistant and can still work normally at -60 ℃. Owing to the high sensitivity and strong adhesion, the P(AMPS-co-AM) hydrogel can be used as a flexible stress or strain sensor to accurately detect small or large movements in different parts of the human body, with accurate responsiveness and excellent stability, which has great potential for application in the fields of electronic skin and flexible wearable devices.

Key words： adhesion sensitivity conductivity hydrogels rapidly copolymerized frost-resistant

Published: 25 February 2025 Online: 2025-02-18

CLC number:

TO632

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	Articles by authors
	ZHAO Tingyu
	SHAO Liang
	JI Zhanyou
	HE Yinkun
	WANG Guangjing
	ZHANG Tao

Cite this article:

ZHAO Tingyu,SHAO Liang,JI Zhanyou, et al. Preparation of a Highly Sensitive, Strongly Adhesive Conductive Hydrogel and Its Application in Flexible Sensing[J]. Materials Reports, 2025, 39(4): 24010212-11.

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https://www.mater-rep.com/EN/10.11896/cldb.24010212 OR https://www.mater-rep.com/EN/Y2025/V39/I4/24010212

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