Parallel-Stranded Spiral Structure of Artificial Muscle Based on Polyethylene Fiber and Silver-Plated Nylon Wire 


Vol. 25,  No. 8, pp. 3151-3163, Aug.  2024
10.1007/s12221-024-00632-2


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  Abstract

Electrothermal polymer artificial muscle has drawn great attention because of its unique structure for imitating the functions of natural muscles with the external thermal stimulus. Herein, we develop a thermal responsible twisted and coiled polymer fiber-based artificial muscle. In brief, the polyethylene fibers and silver-plated nylon wire are prepared; these types of fibers are twisted causing coil nucleation and ultimately nucleation of supercoils to obtain novel parallel-stranded spiral structure of artificial muscle (PE@SPN fiber artificial muscle). The excellent electrothermal property of silver-plated nylon wire contributed to the superior performance of the actuator compared to nickel wire and copper wire. The composite yarn actuator generates contractile strokes of up to 11% under 2.5 Mpa tension and outputs 140 J/kg energy density; the composite yarn actuator can work at ambient temperature about to 50 ℃ with high contractile stroke and long-term stability. In contrast to previous fiber actuators based on PA6 fishing line and sewing thread, which are normally operated at 100 ℃, the actuator based on PE@SPN fiber artificial muscle is operated at a temperature of about 50 ℃. Meanwhile, a bionic elbow joint is designed and driven by the actuator based on polyethylene fiber. We successfully demonstrate the flexion/extension of finger by using the actuation of PE@SPN fiber artificial muscle. The results of experiments show that the promise as a soft actuator towards prosthetics, wearable robot, and power-assisted device applications.

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  Cite this article

[IEEE Style]

Y. Han, Y. Li, J. Wang, S. Zhu, "Parallel-Stranded Spiral Structure of Artificial Muscle Based on Polyethylene Fiber and Silver-Plated Nylon Wire," Fibers and Polymers, vol. 25, no. 8, pp. 3151-3163, 2024. DOI: 10.1007/s12221-024-00632-2.

[ACM Style]

Yali Han, Yang Li, Junjie Wang, and Songqing Zhu. 2024. Parallel-Stranded Spiral Structure of Artificial Muscle Based on Polyethylene Fiber and Silver-Plated Nylon Wire. Fibers and Polymers, 25, 8, (2024), 3151-3163. DOI: 10.1007/s12221-024-00632-2.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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