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

材料导报

2025, Vol. 39

Issue (4): 24010212-11 https://doi.org/10.11896/cldb.24010212

高分子与聚合物基复合材料

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

赵庭煜¹, 邵亮^1,2,*, 姬占有¹, 何寅坤¹, 王广静¹, 张涛¹

1 陕西科技大学化学与化工学院,西安 710021
2 陕西科技大学中国轻工业轻化工助剂重点实验室,西安 710021

Preparation of a Highly Sensitive, Strongly Adhesive Conductive Hydrogel and Its Application in Flexible Sensing

ZHAO Tingyu¹, SHAO Liang^1,2,*, JI Zhanyou¹, HE Yinkun¹, WANG Guangjing¹, ZHANG Tao¹

1 School of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
2 Key Laboratory of Light Industry and Chemical Additives in China, Shaanxi University of Science and Technology, Xi’an 710021, China

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摘要导电水凝胶由于优异的韧性与生物相容性,在人机交互、电子皮肤领域有良好的应用前景,然而在实际的应用场景中为了得到准确响应的信号则需要更优异的粘附性和灵敏度。本工作以2-丙烯酰胺-2-甲基丙磺酸(AMPS)和丙烯酰胺(AM)共聚制备了导电水凝胶材料,该水凝胶在紫外光照条件下通过巯基攻击碳碳双键快速聚合。其对猪皮肤的粘附强度达到525 kPa,对铝片的粘附强度高达817 kPa。区别于传统的制备方法,本工作在不添加任何导电填料的条件下所制得水凝胶的电导率达到1.08 S/m,且灵敏度因子(GF)达到9.28,避免了因导电填料分散不均而导致的力学性能差且灵敏度不高的问题。此外,该水凝胶有良好的抗冻性,即使在-60 ℃的条件下仍能正常工作。得益于高灵敏度和强粘附性,P(AMPS-co-AM)水凝胶可组装成柔性应力或应变传感器精确地检测人体不同部位的微小与大幅度动作,具有准确响应性和良好稳定性,在电子皮肤及柔性可穿戴设备领域有很大的应用潜力。

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	赵庭煜
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	王广静
	张涛

关键词: 粘附性灵敏度导电水凝胶快速聚合抗冻性

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

出版日期: 2025-02-25 发布日期: 2025-02-18

ZTFLH:

TO632

基金资助: 国家自然科学基金面上项目(52373039);西安市科技计划项目(22GXFW0001);陕西省创新能力支撑计划(2021TD-16);陕西省教育厅服务地方科研计划(23JC018)

通讯作者: *邵亮,博士,陕西科技大学化学与化工学院教授、博士研究生导师,澳大利亚卧龙岗大学访问学者。目前主要从事柔性传感材料的设计及功能性聚合物发泡材料研究工作。shaoliang@sust.edu.cn

作者简介: 赵庭煜,陕西科技大学化学与化工学院硕士研究生,在邵亮教授的指导下进行研究。目前主要从事导电水凝胶柔性应变传感器的制备与性能研究。

引用本文:

赵庭煜, 邵亮, 姬占有, 何寅坤, 王广静, 张涛. 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[J]. 材料导报, 2025, 39(4): 24010212-11.
ZHAO Tingyu, SHAO Liang, JI Zhanyou, HE Yinkun, WANG Guangjing, ZHANG Tao. Preparation of a Highly Sensitive, Strongly Adhesive Conductive Hydrogel and Its Application in Flexible Sensing. Materials Reports, 2025, 39(4): 24010212-11.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.24010212 或 https://www.mater-rep.com/CN/Y2025/V39/I4/24010212

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