文献类型：期刊文献

英文题名：Skin-mimicking strategy to fabricate strong and highly conductive anti-freezing cellulose-based hydrogels as strain sensors

作者：Xie, Yitong[1,2,3,4,5] Gao, Shishuai[1,2,3,4] Jian, Junyu[1,2,3,4] Shi, Xiaoyu[1,2,3,4] Lai, Chenhuan[1,2,3,4] Wang, Chunpeng[1,2,3,4] Xu, Feng[5] Chu, Fuxiang[1,2,3,4] Zhang, Daihui[1,2,3,4]

第一作者：Xie, Yitong

通信作者：Zhang, DH[1];Zhang, DH[2];Zhang, DH[3]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[3]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[4]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Jiangsu, Peoples R China;[5]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China

年份：2023

卷号：227

起止页码：462-471

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;Scopus(收录号：2-s2.0-85144443936);WOS:【SCI-EXPANDED(收录号:WOS:000909124700001)】；

基金：Acknowledgments We acknowledge the support from the Fundamental Research Funds for the Central Nonprofit Research Institution of Chinese Academy of Forestry (CAFYBB2021QB004) , National Natural Science Foundation (32271809, 32001283, 31890774) .

语种：英文

外文关键词：Biomimetic; Cellulose; Anti-freezing; Conductive; Hydrogel; Strain sensors

摘要：Conductive hydrogels have attracted increasing attention for applications in wearable and flexible strain sensors. However, owing to their relatively weak strength, poor elasticity, and lack of anti-freezing ability, their appli-cations have been limited. Herein, we present a skin-mimicking strategy to fabricate cellulose-enhanced, strong, elastic, highly conductive, and anti-freezing hydrogels. Self-assembly of cellulose to fabricate a cellulose skeleton is essential for realizing a skin-mimicking design. Furthermore, two methods, in situ polymerization and solvent replacement, were compared and investigated to incorporate conductive and anti-freezing components into hydrogels. Consequently, when the same ratio of glycerol and lithium chloride was used, the anti-freezing hydrogels prepared by in situ polymerization showed relatively higher strength (1.0 MPa), while the solvent-replaced hydrogels exhibited higher elastic recovery properties (94.6 %) and conductivity (4.5 S/m). In addi-tion, their potential as strain sensors for monitoring human behavior was analyzed. Both hydrogels produced reliable signals and exhibited high sensitivity. This study provides a new horizon for the fabrication of strain sensors that can be applied in various environments.