上海理工大学材料与化学学院 上海 200093
yuebingbing@usst.edu.cn
收稿:2026-02-04,
录用:2026-03-20,
网络首发:2026-04-28,
纸质出版:2026-06-20
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何成, 王孟朝, 岳兵兵. 基于单宁酸与MXene协同增强的复合水凝胶用于高性能柔性传感与生理信号监测. 高分子通报, 2026, 39(6), 938–952.
He, C.; Wang, M. C.; Yue, B. B. Composite hydrogel synergistically enhanced by tannic acid and MXene for high-performance flexible sensing and physiological signal monitoring. Polym. Bull. (in Chinese), 2026, 39(6), 938–952.
何成, 王孟朝, 岳兵兵. 基于单宁酸与MXene协同增强的复合水凝胶用于高性能柔性传感与生理信号监测. 高分子通报, 2026, 39(6), 938–952. DOI: 10.14028/j.cnki.1003-3726.2026.26.058.
He, C.; Wang, M. C.; Yue, B. B. Composite hydrogel synergistically enhanced by tannic acid and MXene for high-performance flexible sensing and physiological signal monitoring. Polym. Bull. (in Chinese), 2026, 39(6), 938–952. DOI: 10.14028/j.cnki.1003-3726.2026.26.058.
水凝胶凭借优异生物相容性与可调理化性质,在可穿戴生物传感领域极具应用潜力。然而,开发兼具优良力学性能、高传感灵敏度、稳定界面黏附性与良好导电性的水凝胶传感材料仍为关键挑战。针对上述问题,本研究设计制备了聚丙烯酰胺/单宁酸/MXene(PAM/TA/MXene
PTM)复合水凝胶柔性传感器。该体系借助TA酚羟基、MXene表面羟基/氧终端与PAM酰胺基团形成的多重动态氢键构建增强交联网络,协同优化了材料力学性能、黏附性与导电性。PTM水凝胶展现出优异拉伸性(应变>1200%)、高灵敏度(GF最高0.61)及毫秒级响应/恢复能力;TA赋予其强皮肤/多基底黏附性。该传感器集高保真人体运动与微表情监测、高质量心电(ECG)与肌电(EMG)信号采集于一体,且在动态环境下的信噪比(SNR)优于商用水凝胶电极。本研究为医疗监护与人机交互用高性能可穿戴传感系统提供了可行的材料方案。
Hydrogels exhibit great application potential in wearable biosensing owing to their excellent biocompatibility and tunable physicochemical properties. However
developing hydrogel sensing materials with integrated excellent mechanical properties
high sensing sensitivity
stable interfacial adhesion and favorable electrical conductivity remains a critical challenge. To address these issues
a flexible sensor based on polyacrylamide/tannic acid/MXene (PAM/TA/MXene
PTM) composite hydrogel is designed and fabricated in this work. In this system
multiple dynamic hydrogen bonds are formed among the phenolic hydroxyl groups of TA
the hydroxyl/oxygen terminals on the MXene surface
and the amide groups of PAM
constructing a reinforced cross-linked network that synergistically optimizes the mechanical properties
adhesion
and electrical conductivity of the material. The PTM hydrogel demonstrates outstanding stretchability (strain > 1200%)
high sensitivity (maximum gauge factor (GF) of 0.61)
and millisecond-level response/recovery capability; TA endows it with robust adhesion to the skin and various substrates. This sensor integrates high-fidelity monitoring of human body movements and micro-expressions with high-quality acquisition of electrocardiogram (ECG) and electromyogram (EMG) signals
and its signal-to-noise ratio (SNR) in dynamic environments outperforms that of commercial hydrogel electrodes. This study provides a feasible material solution for high-performance wearable sensing systems applied in medical monitoring and human-machine interaction.
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