Ca2+/ethanol driven in-situ integration of tough, antifreezing and conductive silk fibroin/polyacrylamide hydrogels for wearable sensors and electronic skin
文献类型： 外文期刊
作者： Sun, Guangdong 1 ; He, Xiuling 1 ; Chen, Haixia 1 ; Li, Jinchao 2 ; Wang, Yongqiang 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Sericulture & Tea, Hangzhou 310021, Peoples R China
2.Zhejiang Sci Tech Univ, Engn Res Ctr Ecodyeing & Finishing Text, Minist Educ, Hangzhou 310018, Peoples R China
关键词： Silk fibroin hydrogel; Ion conductivity; IPN structure; Wearable sensors; Electronic skin
期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）
ISSN： 1385-8947
年卷期： 2024 年 497 卷
页码：
收录情况： SCI
摘要：
Integrating high strength, flexibility, biocompatibility, adhesion, and freezing resistance into conductive hydrogels for developing wearable electronic devices has consistently posed significant challenges in relevant research fields. Inspired by the silk dissolution behavior, a robust, flexible, antifreezing, and conductive silk fibroin/polyacrylamide (SF/PAM) hydrogel was synthesized in a CaCl2-ethanol-water (Ca2+/E/W) ternary solvent via a one-pot photogelation process. The gelation of SF and AM was enhanced by the ternary solvent, attributed to the inhibitory effects of Ca2+ ions and alcohols on hydrogen bond formation. The SF/PAM hydrogels based on Ca2+/E/W exhibited desirable mechanical properties (stretching: 800 % strain and 120 kPa stress; compression: 80 % strain and 334.0 kPa stress), excellent recoverability after deformation, high ion conductivity (2.4 S
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