Multifunction E-Skin Based on MXene–PA–Hydrogel for Human Behavior Monitoring

材料科学 复合数 自愈水凝胶 乙烯醇 复合材料 灵活性(工程) 纳米技术 聚合物 统计 数学 高分子化学
作者
Xiaojiong Zhao,Haocheng Jiang,Ping Sun,Ruichao Wei,San Ping Jiang,Jianying Hu,Shuidong Zhang
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:15 (48): 56275-56284 被引量:2
标识
DOI:10.1021/acsami.3c12930
摘要

Hydrogels have attracted significant attention in various fields, such as smart sensing, human-machine interaction, and biomedicines, due to their excellent flexibility and versatility. However, current hydrogel electronic skins are still limited in stretchability, and their sensing functionality is often single-purpose, making it difficult to meet the requirements of complex environments and multitasking. In this study, we developed an MXene nanoplatelet and phytic acid-coreinforced poly(vinyl alcohol) (PVA) composite, denoted as MXene-PA-PVA. The strong hydrogen bonds formed by the interaction of the different components and the enhancement of chain entanglement result in a significant improvement in the mechanical properties of the PVA/PA/MXene composite hydrogel. This improvement is reflected in an increase of 271.43% in the maximum tensile strain and 35.29% in the maximum fracture stress. Moreover, the composite hydrogel exhibits excellent adhesion, water retention, heat resistance, and conductivity properties. The PVA/PA composite material combined with MXene demonstrates great potential for use as multifunctional sensors for strain and temperature detection with a strain-sensing sensitivity of 3.23 and a resistance temperature coefficient of 8.67. By leveraging the multifunctional characteristics of this composite hydrogel, electronic skin can accurately monitor human behavior and physiological reactions. This advancement opens up new possibilities for flexible electronic devices and human-machine interactions in the future.
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