Study of the functional properties of the piezoresistive effect and Joule heating of electrically conductive composites based on 3D-printed polymers with a PEDOT:PSS surface layer
https://doi.org/10.20914/2310-1202-2025-3-249-254
Abstract
The paper presents the results of a comprehensive study of the functional properties of electrically conductive composites obtained by surface modification of polymer materials for 3D printing – polylactide (PLA), polyethylene terephthalate glycol (PETG), and thermoplastic polyurethane (TPU) – with a conducting polymer complex of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The piezoresistive response of the samples was studied under mechanical bending deformation in the range of 0–2%. The gauge factor (GF) was calculated. The PETG + PEDOT:PSS composite demonstrated the highest sensitivity with a maximum GF of ≈ 47, which is due to the formation of a rigid and well-adhered conductive layer that is prone to cracking during deformation. For the PLA + PEDOT:PSS and TPU + PEDOT:PSS composites, the maximum GF values were ≈ 19.5 and ≈ 13.5, respectively. A study of the Joule heating effect under a constant voltage of 70 V revealed a slight increase in the sample temperature (ΔT = 0.5–1.9 °C), which is due to the high resistivity of the surface layer. It was shown that, despite their limited effectiveness for active heating purposes, the materials exhibit stability when subjected to current flow. These findings demonstrate the potential of these composites for the development of passive strain sensors and flexible electronic components using additive manufacturing techniques in nuclear power plants (NPPs).
About the Authors
A. A. Filimonova
Kazan State Power Engineering University
Russian Federation
Russian Federation
Dr. Sci. (Engin.), assistant professor, Head of the Department of Autonomous Distributed Energy, Krasnoselskaya St., 51 Kazan, 420066, Russia
A. Y. Vlasova
Kazan State Power Engineering University
Cand. Sci. (Engin.), assistant professor, nuclear and thermal power plants department, Krasnoselskaya St., 51 Kazan, 420066, Russia
R. F. Kamalieva
Kazan State Power Engineering University
student, research engineer, nuclear and thermal power plants department, Krasnoselskaya St., 51 Kazan, 420066, Russia
E. S. Mayorov
Kazan State Power Engineering University
student, research engineer, nuclear and thermal power plants department, Krasnoselskaya St., 51 Kazan, 420066, Russia
A. A. Filimonov
Kazan State Power Engineering University
student, laboratory researcher, nuclear and thermal power plants department, Krasnoselskaya St., 51 Kazan, 420066, Russia
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Review
For citations:
Filimonova A.A., Vlasova A.Y., Kamalieva R.F., Mayorov E.S., Filimonov A.A. Study of the functional properties of the piezoresistive effect and Joule heating of electrically conductive composites based on 3D-printed polymers with a PEDOT:PSS surface layer. Proceedings of the Voronezh State University of Engineering Technologies. 2025;87(3):249-254. (In Russ.) https://doi.org/10.20914/2310-1202-2025-3-249-254
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