Tailor-made high elasticity and low-hysteresis hydrogels based on asymmetric H-bonding crosslinking for wearable applications  

作　　者：Xiaofang Shi Nan Shi Miaomiao Dang Chengyu Ji Yingjie Li Peiyi Wu Zhiguo Hu 

机构地区：[1]Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals,Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials,School of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang 453007,China [2]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Chemistry,Chemical Engineering and Biotechnology&Center for Advanced Low-dimension Materials,Donghua University,Shanghai 201620,China

出　　处：《Science China Chemistry》2025年第3期1117-1125,共9页中国科学(化学英文版)

基　　金：supported by the National Natural Science Foundation of China (52303006);the National Postdoctoral Science Foundation of China (2023M731012);the Key Science and Technology Project of Henan Province (232102230099);the Foundation of Henan Educational Committee (24A150015)。

摘　　要：The conventional method of fabricating hydrogels constantly confronts the conflict between elasticity and toughness,limiting their repetitive application.Achieving the desired elasticity through a simple and low-cost approach is a significant challenge for hydrogels,particularly through rational molecular design.Here,low-hysteresis and high-toughness hydrogels are developed from the design of a new feature monomer,N-acryloylethylsemicarbazide(NACE).Based on a concept of“asymmetric Hbonding design”,the unique double and triple H-bonding of NACE can result in a novel asymmetric crosslinking polymer with alternating strong and weak H-bonding regions.The NACE is copolymerized with acrylamide(AM)to regulate the mechanical properties of hydrogel via H-bonding density.The P(NACE-AM)ionic hydrogels are obtained simply and rapidly via one-step photopolymerization without a chemical cross-linking agent.The P(NACE-AM)hydrogels combine superb mechanical elasticity and toughness,and excellent ionic conductivity,showing great potential as durable ionic conductive devices for wearable utilization.

关 键 词：new feature monomer asymmetric H-bonding low-hysteresis hydrogel WEARABLE sensor 

分 类 号：TQ427.26[化学工程]