High-Strength and High-Conductivity Core-Sheath Hydrogel Long Fibers for Stretchable Ionic Strain Sensors 


Vol. 25,  No. 7, pp. 2419-2431, Jul.  2024
10.1007/s12221-024-00606-4


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  Abstract

Hydrogel fibers that can be raided possess considerable promise in the realm of flexible electronic gadgets, as they exhibit both exceptional durability and excellent conductivity. Using a continuous coaxial wet-spinning method, we have created a hydrogel long fiber with a core-sheath structure that is both strong, conductive, frost-resistant, and braidable. Hydroxymethylpropyl cellulose (HPMC) added lowconcentration polyvinyl alcohol (PVA) toform the core layer of the fiber he sheaths made of highconcentration PVA. Next, the fibers are submerged in a sodium chloride solution to create PVA@PVA-HPMC hydrogel fibers that exhibit remarkable tensile strength (6.7 MPa), extensive elongation (450%), excellent electrical conductivity (9.23 S/m), and exceptional resistance to freezing temperatures (below -20 °C). The hydrogel fibers are further encapsulated using PSPI copolymers to enhance their environmental stability. Finally, the PVA@PVA-HPMC fibers are applied as flexible sensors to detect human joint movements, and assembled into e-textiles to monitor the positional distribution of pressure.

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  Cite this article

[IEEE Style]

H. Lou, Y. Wang, H. Wu, S. Ruan, J. Wan, X. Pu, "High-Strength and High-Conductivity Core-Sheath Hydrogel Long Fibers for Stretchable Ionic Strain Sensors," Fibers and Polymers, vol. 25, no. 7, pp. 2419-2431, 2024. DOI: 10.1007/s12221-024-00606-4.

[ACM Style]

Hengyi Lou, Yu Wang, Hui Wu, Shengchao Ruan, Junmin Wan, and Xiong Pu. 2024. High-Strength and High-Conductivity Core-Sheath Hydrogel Long Fibers for Stretchable Ionic Strain Sensors. Fibers and Polymers, 25, 7, (2024), 2419-2431. DOI: 10.1007/s12221-024-00606-4.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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