Natural cellulose reinforced multifunctional eutectogels for wearable sensors and epidermal electrodes

文献类型： 外文期刊

第一作者： Lu, Qianwen

作者： Lu, Qianwen;Li, Hengfeng;Tan, Zhijian

作者机构：

关键词： Natural cellulose; Eutectogels; Strain sensors; Epidermal electrode

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：12.5； 五年影响因子：11.9 ）

ISSN： 0144-8617

年卷期： 2025 年 348 卷

页码：

收录情况： SCI

摘要： Wearable electronics significantly impact health monitoring, clinical care, and human-machine interfaces. Eutectogels, which utilize deep eutectic solvents (DES) address the drawbacks of hydrogels, such as weight loss and poor temperature tolerance, as well as the high costs and toxicities associated with ionogels. Despite these advances, most eutectogels serve only as sensors or epidermal electrodes and rarely fulfill both functions simultaneously. In this study, we present a multifunctional eutectogel designed to function in both ways. Incorporating natural cotton cellulose nanofibers as nanofillers reinforced the tensile strength of the resultant eutectogel by 7.47 times compared to that of the pure eutectogel, reaching 4.93 MPa. This eutectogel exhibited high ionic conductivity (1.22 S m- 1), strong adhesion (1562.2 kPa to iron), self-healing ability (80.37% strain recovery and 80.53% tensile strength recovery), a broad temperature tolerance (-40 to 80 degrees C), and antibacterial properties. It demonstrates high sensitivity for the real-time strain detection of human activities and accurately captures electrophysiological signals, enabling the control of a small car. This versatile eutectogel has excellent potential for use in flexible wearable electronics.

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