Piezo-resistive Sensor of Auxetic Structures Based on 3D-Printed TPU Coated by Castor-Oil-Based Waterborne Polyurethane/Graphene 


Vol. 24,  No. 1, pp. 15-28, Jan.  2023
10.1007/s12221-023-00052-8


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  Abstract

Sensors that detect resistance changes are generally representative of pressure sensors, and piezo-resistive sensors have recently been studied in various ways to recognize various changing environments. Our research used thermoplastic polyurethane (TPU) as a raw material to create a 3D-printed auxetic lattice structure. Here, the truss and honeycomb structures with positive Poisson셲 ratios for regular lattice structures, chiral truss and re-entrant structures with negative Poisson셲 ratios for auxetic lattice structures, were studied and characterized. By coating graphene, each structure is designed to detect a change in resistance. The auxetic structures manufactured have excellent strength and detect electrical conductivity, allowing them to be used as piezo-resistive sensors with constant resistance changes at given compression. Castor-oil-based waterborne polyurethane (CWPU)/graphene-coated auxetic sensors suggest potential applications for multifunction piezo-resistive sensors under compressed deformation.

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  Cite this article

[IEEE Style]

H. Y. Choi, "Piezo-resistive Sensor of Auxetic Structures Based on 3D-Printed TPU Coated by Castor-Oil-Based Waterborne Polyurethane/Graphene," Fibers and Polymers, vol. 24, no. 1, pp. 15-28, 2023. DOI: 10.1007/s12221-023-00052-8.

[ACM Style]

Hyeong Yeol Choi. 2023. Piezo-resistive Sensor of Auxetic Structures Based on 3D-Printed TPU Coated by Castor-Oil-Based Waterborne Polyurethane/Graphene. Fibers and Polymers, 24, 1, (2023), 15-28. DOI: 10.1007/s12221-023-00052-8.

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pISSN : 1229 - 9197
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