生物相容性
材料科学
自愈水凝胶
自愈
纳米技术
可穿戴计算机
细菌纤维素
可穿戴技术
计算机科学
纤维素
嵌入式系统
化学工程
工程类
医学
替代医学
病理
高分子化学
冶金
作者
Baoting Dong,Dehai Yu,Peng Lü,Zhaoping Song,Wei Chen,Fengshan Zhang,Bin Li,Huili Wang,Wenxia Liu
标识
DOI:10.1016/j.carbpol.2023.121621
摘要
Conductive hydrogels have received increasing attention in the field of wearable electronics, but they also face many challenges such as temperature tolerance, biocompatibility, and stability of mechanical properties. In this paper, a double network hydrogel of MXene/TEMPO bacterial cellulose (TOBC) system is proposed. Through solvent replacement, the hydrogel exhibits wide temperature tolerance (-20-60 °C) and stable mechanical properties. A large number of hydrogen bonds, MXene/TOBC dynamic three-dimensional network system, and micellar interactions endow the hydrogel with excellent mechanical properties (elongation at break ~2800 %, strength at break ~420 kPa) and self-healing ability. The introduction of tannic acid prevents the oxidation of MXene and the loss of electrical properties of the hydrogel. In addition, the sensor can also quickly (74 ms) and sensitive (gauge factor = 15.65) wirelessly monitor human motion, and the biocompatibility can well avoid the stimulation when it comes into contact with the human body. This series of research work reveals the fabrication of MXene-like flexible wearable electronic devices based on self-healing, good cell compatibility, high sensitivity, wide temperature tolerance and durability, which can be used in smart wearable, wireless monitoring, human-machine Interaction and other aspects show great application potential.
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