Arias-Ferreiro, GorettiAres-Pernas, AnaLasagabaster Latorre, AuroraDopico-García, M. SoniaLigero, PabloPereira, N.Costa, P.Lanceros-Méndez, S.Abad Martínez, María José2025-01-272025-01-272022Arias‐Ferreiro, Goretti, et al. «Photocurable Printed Piezocapacitive Pressure Sensor Based on an Acrylic Resin Modified with Polyaniline and Lignin». Advanced Materials Technologies, vol. 7, n.o 8, agosto de 2022, p. 2101503. DOI.org (Crossref), https://doi.org/10.1002/admt.202101503.2365-709X10.1002/admt.202101503.https://hdl.handle.net/20.500.14352/116341The design of suitable materials for the manufacture of pressure sensors withhigh sensitivity and flexibility in wearable electronics is still a challenge. In thisstudy, a flexible and portable pressure sensor is developed based on a pho-topolymeric formulation of polyaniline (PANI)/Lignin/acrylate. The amountof photoinitiator and the presence of lignin within the filler are investigated toobtain the best printability and capacitive response. Low PANI contents drasti-cally increase the dielectric constant and 4 wt% photoinitiator improves thesignal and sensitivity. A sensitivity of 0.012 kPa–1 is achieved in a linear range(0–10 kPa) with only 3.5 wt% PANI. Lignin improves both the dispersion of thefiller within the matrix and the printability of the resin, due to lower absorptivityat the UV wavelength of the 3D printer. Thus, the PANI-Lignin filler is selectedfor the fabrication of a piezocapacitive prototype transducer. The pressuretransducer demonstrate its practical application by responding to a humanfootfall and transmitting its corresponding electrical signal. This study showsthe enhanced properties of lignin modified PANI acrylate composites. Basedon lignin, an abundant natural waste, a sustainable photocurable cost-effectivepolymer is proposed for the fabrication of printable, wearable electronics.engjournal articlehttps://doi.org/10.1002/admt.202101503restricted access535Dielectric constantFlexible electronicsPolyanilinePhotocurable printedPiezocapacitive sensorCienciasFísica de materialesElectrónica (Física)2203 Electrónica2304.03 Polímeros Compuestos