与丝多孔网织物和丝纳米纤维共同增强的高强度抗冻柔性导电聚乙烯醇水凝胶传感器

IF 3.9 3区化学 Q2 POLYMER SCIENCE

Journal of Polymer Science Pub Date : 2024-09-11 DOI:10.1002/pol.20240494

Chengyao Zhuge, Yaping Wang, Qian Qian, Shunyang Li, Wangyang Lu, Nan Li

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引用次数: 0

摘要

基于水凝胶的柔性应变传感器在可穿戴电子设备中有着巨大的应用潜力，但目前要实现传感器的优异机械性能和导电性能还很困难。在这项研究中，聚乙烯醇（PVA）水凝胶添加了带正电荷的蚕丝纳米纤维（PCSNF）和 PEDOT:PSS，由此制成的 PVA-PEDOT:PSS-PCSNF 水凝胶织物显示出卓越的机械性能（4.38 兆帕）和较高的导电性。水凝胶织物中乙二醇（EG）的存在增强了抗冻性能，即使在低温（-18°C）下也能保持导电性。此外，乙二醇还有助于提高 PEDOT:PSS 的导电性。这种 PVA-PEDOT:PSS-PCSNF 水凝胶织物可用作精确可靠的应变传感器，用于检测各种人体运动和面部表情。值得注意的是，PVA-PEDOT:PSS-PCSNF 水凝胶织物应变传感器的量规系数为 1.02，而且非常耐用，可承受 400 次弯头弯曲。这项研究介绍了一种创新方法，可用于制造高性能、高弹性的水凝胶柔性传感器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

High‐strength antifreezing flexible conductive polyvinyl alcohol hydrogel sensors co‐reinforced with silk porous mesh fabric and silk nanofibers

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High‐strength antifreezing flexible conductive polyvinyl alcohol hydrogel sensors co‐reinforced with silk porous mesh fabric and silk nanofibers

Hydrogel‐based flexible strain sensors have an enormous potential for applications in wearable electronics, but currently, realizing excellent mechanical properties and electrical conductivity of sensors is difficult. In this work, polyvinyl alcohol (PVA) hydrogels were augmented with positively charged silk nanofibers (PCSNF) and PEDOT:PSS, and the resultant PVA‐PEDOT:PSS‐PCSNF hydrogel fabric showed remarkable mechanical properties (4.38 MPa) and elevated electrical conductivity. The presence of ethylene glycol (EG) in the hydrogel fabric imparts antifreezing properties and sustains electrical conductivity even at frigid temperatures (−18°C). In addition, EG contributes to the improvement of the electrical conductivity of PEDOT:PSS. This PVA‐PEDOT:PSS‐PCSNF hydrogel fabric can be used as a precise and reliable strain sensor for detecting diverse human motions and facial expressions. Significantly, the PVA‐PEDOT:PSS‐PCSNF hydrogel fabric strain sensor exhibits a gauge factor of 1.02 and exceptional durability, withstanding 400 elbow bends. This study introduces an innovative method for creating high‐performance and resilient hydrogel‐based flexible sensors.

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来源期刊

Journal of Polymer Science POLYMER SCIENCE-

CiteScore

6.30

自引率

5.90%

发文量

264

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology.