Intrinsically anti-freezing and anti-dehydration hydrogel for multifunctional wearable sensors  

用于多功能可穿戴传感器的本征耐冻、抗干水凝胶

作　　者：Sijing He Qinyi Cheng Yunhao Liu Qinfeng Rong Mingjie Liu 何思婧;程沁艺;刘耘豪;荣勤丰;刘明杰(School of Chemistry and Pharmaceutical Sciences,Guangxi Key Laboratory of Low Carbon Energy Materials,Guangxi Normal University,Guilin 541004,China;The Experimental High School Attached to Beijing Normal University,Beijing 100032,China;School of Chemistry,Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education,Beihang University,Beijing 100191,China)

机构地区：[1]School of Chemistry and Pharmaceutical Sciences,Guangxi Key Laboratory of Low Carbon Energy Materials,Guangxi Normal University,Guilin 541004,China [2]The Experimental High School Attached to Beijing Normal University,Beijing 100032,China [3]School of Chemistry,Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education,Beihang University,Beijing 100191,China

出　　处：《Science China Materials》2022年第7期1980-1986,共7页中国科学（材料科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(22002024);the Natural Science Foundation of Guangxi Province(2019GXNSFBA245033,2019GXNSFGA245003,and 2021JJB120045);Guangxi Technology Base and Talent Subject(AD19245105,AD19245035)。

摘　　要：Conductive hydrogels have combined high conductivity and excellent mechanical properties[1,2],and have received increasing attention due to their promising and diverse applications in flexible energy storage devices[3,4],soft robotics[5,6],and wearable sensors[7–9].Nevertheless,their applications are severely limited by inevitable function loss because they would be frozen or dehydrated due to climate change[10–14].耐冻和抗干水凝胶由于其在不同环境下的良好适应性,在制造可穿戴电子产品中引起了极大的关注.然而,目前的耐冻抗干水凝胶主要依赖于不同添加剂的掺入,这严重限制了其应用.本文设计合成了一种含季铵基团侧链的水凝胶,该水凝胶在不添加有机溶剂和高浓度离子化合物时仍具有耐冻、抗干性能.在-40℃,该水凝胶保持其柔韧性;在60%相对湿度下,放置7天后仍保持高拉伸性.此外,基于该水凝胶的电容型传感器对拉伸和压缩变形都具有很高的敏感性,能够用于检测人体在不同环境下的运动.这种新型水凝胶可作为适用于各种气候环境的多功能传感器的理想平台.

关 键 词：水凝胶 可穿戴传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TQ427.26[自动化与计算机技术—控制科学与工程]