2026-06-29T02:48:00Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1183322025-02-27T00:55:35Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Arias-Ferreiro, Goretti author Lasagabaster Latorre, Aurora author Ares-Pernas, Ana author Dopico-García, M. Sonia author Pereira, N. author Costa, P. author Lanceros-Méndez, S. author Abad Martínez, María José author 2022 The development of tunable UV-curable polymeric composites for functional applications, taking into consideration environmental issues and additive manufacturing technologies, is a research topic with relevant challenges yet to be solved. Herein, acrylic composites filled with 0–3 wt.%. polyaniline/ multiwalled carbon nanotubes (PANI/MWCNT) are prepared by Digital Light Processing (DLP) in order to tailor morphology, thermal, mechanical, and electromechanical properties. Viscosity, real-time infrared spectroscopy, and cure depth tests allow optimizing resin composition for suitable DLP printing. 2 wt.% is the maximum filler content reproducibly embedded in the polymer matrix. The advantages of PANI/MWCNT (50/50 wt.%) compared with single-component composites include safety issues, enhanced printability, increased electrical conductivity and thermal stability, and lower electrical percolation threshold (0.83 wt.%). Above this threshold the composites display excellent piezoresistive response, no hysteresis, and stability for over 400 compression cycles. The pressure sensibility (PS) of 2 wt.% composites decreases with applied pressure from PS ≈ 15 to 0.8 Mpa−1 for maximum pressures of 0.02 and 0.57 MPa, respectively. A proof-of-concept of the functionality of the novel materials is developed in the form of a tactile sensor, demonstrating their potential for pressure sensing applications as cost-effective, sustainable, and flexible materials for printed electronics. Arias‐Ferreiro, Goretti, et al. «Flexible 3D Printed Acrylic Composites Based on Polyaniline/Multiwalled Carbon Nanotubes for Piezoresistive Pressure Sensors». Advanced Electronic Materials, vol. 8, n.o 12, diciembre de 2022, p. 2200590. DOI.org (Crossref), https://doi.org/10.1002/aelm.202200590 2199-160X 10.1002/aelm.202200590 https://hdl.handle.net/20.500.14352/118332 https://doi.org/10.1002/aelm.202200590 Flexible 3d printed acrylic composites based on polyaniline/multiwalled carbon nanotubes for piezoresistive pressure sensors