High-stability flexible body motion monitoring sensor based on waterborne polyurethane-coated conductive warp-knitted fabric

IF 2.8 4区 工程技术 Q2 POLYMER SCIENCE Macromolecular Research Pub Date : 2024-04-08 DOI:10.1007/s13233-024-00258-6
Xinyan Yue, Xiaohu Wang, Xiao Han, Jianhan Hong
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Abstract

To prepare a high-stability flexible sensor for body motion monitoring, a conductive warp-knitted fabric (CWKF) with a two-bar tricot structure coated with polyaniline(PANI) was prepared by in situ polymerization, and then a waterborne polyurethane-coated conductive warp-knitted fabric (WPU/CWKF) was prepared using a simple dip-and-dry method. The structure and properties of both CWKF and WPU/CWKF were analyzed, their strain-resistance sensing properties were investigated, and their application in body motion monitoring was discussed. The results indicate that conductive treatment of in situ polymerization can give the polyester warp-knitted fabric good electrical conductivity, with a resistivity of approximately 5 Ω cm. After coating with WPU, the resistivity of the WPU/CKWF increased to approximately 40 Ω cm. Both CKWF and WPU/CKWF showed good strain-resistance sensing performance, but CWKF was more sensitive than WPU/CKWF, whereas WPU/CKWF was more stable than CWKF. Both the CWKF and WPU/CKWF sensors could monitor body motion in real time. Similar to their base materials, the CWKF sensor demonstrated a higher sensitivity for human movement monitoring, whereas the WPU/CKWF sensor exhibited higher stability.

Graphic abstract

Conductive warp-knitted fabric (CWKF) with a two-bar tricot warp-knitted structure coated with polyaniline (PANI) was prepared by in situ polymerisation. After repeated reciprocal stretching, the structure of the PANI conductive layer on the CWKF surface broke down and its conductivity changed, especially under large strains. CWKF sensors enable real-time human motion monitoring with high sensitivity

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基于水性聚氨酯涂层导电经编织物的高稳定性柔性人体运动监测传感器
为了制备一种用于人体运动监测的高稳定性柔性传感器,研究人员采用原位聚合法制备了一种涂覆聚苯胺(PANI)的双条经编结构导电经编织物(CWKF),然后采用简单的浸渍干燥法制备了一种水性聚氨酯涂覆导电经编织物(WPU/CWKF)。分析了 CWKF 和 WPU/CWKF 的结构和性能,研究了它们的抗应变传感性能,并讨论了它们在人体运动监测中的应用。结果表明,原位聚合的导电处理可使聚酯经编织物具有良好的导电性,电阻率约为 5 Ω cm。涂覆 WPU 后,WPU/CKWF 的电阻率增加到约 40 Ω 厘米。CKWF 和 WPU/CKWF 都显示出良好的应变电阻传感性能,但 CWKF 比 WPU/CKWF 更灵敏,而 WPU/CKWF 比 CWKF 更稳定。CWKF 和 WPU/CKWF 传感器都能实时监测人体运动。与它们的基础材料类似,CWKF 传感器在人体运动监测方面表现出更高的灵敏度,而 WPU/CKWF 传感器则表现出更高的稳定性。在反复往复拉伸后,CWKF 表面的 PANI 导电层结构发生了破坏,其导电性发生了变化,尤其是在大应变情况下。CWKF 传感器实现了高灵敏度的实时人体运动监测
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来源期刊
Macromolecular Research
Macromolecular Research 工程技术-高分子科学
CiteScore
4.70
自引率
8.30%
发文量
100
审稿时长
1.3 months
期刊介绍: Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.
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