RT Journal Article
T1 Lignin as a High-Value Bioaditive in 3D-DLP Printable Acrylic Resins and Polyaniline Conductive Composite
A1 Arias Ferreiro, Goretti
A1 Lasagabaster Latorre, Aurora
A1 Ares Pernas, Ana Isabel
A1 Ligero Martínez-Risco, Pablo
A1 García-Garabal Mosquera, Sandra María
A1 Dopico García, María Sonia
A1 Abad López, María José
AB With increasing environmental awareness, lignin will play a key role in the transition from the traditional materials industry towards sustainability and Industry 4.0, boosting the development of functional eco-friendly composites for future electronic devices. In this work, a detailed study of the effect of unmodified lignin on 3D printed light-curable acrylic composites was performed up to 4 wt.%. Lignin ratios below 3 wt.% could be easily and reproducibly printed on a digital light processing (DLP) printer, maintaining the flexibility and thermal stability of the pristine resin. These low lignin contents lead to 3D printed composites with smoother surfaces, improved hardness (Shore A increase ~5%), and higher wettability (contact angles decrease ~19.5%). Finally, 1 wt.% lignin was added into 3D printed acrylic resins containing 5 wt.% p-toluensulfonic doped polyaniline (pTSA-PANI). The lignin/pTSA-PANI/acrylic composite showed a clear improvement in the dispersion of the conductive filler, reducing the average surface roughness (Ra) by 61% and increasing the electrical conductivity by an order of magnitude (up to 10−6 S cm−1) compared to lignin free PANI composites. Thus, incorporating organosolv lignin from wood industry wastes as raw material into 3D printed photocurable resins represents a simple, low-cost potential application for the design of novel high-valued, bio-based products.
PB MDPI
SN 2073-4360
YR 2022
FD 2022-10-04
LK https://hdl.handle.net/20.500.14352/72386
UL https://hdl.handle.net/20.500.14352/72386
LA eng
NO Arias Ferreiro, G., Lasagabaster Latorre, A., Ares Pernas, A. I., et al. «Lignin as a High-Value Bioaditive in 3D-DLP Printable Acrylic Resins and Polyaniline Conductive Composite». Polymers, vol. 14, n.o 19, octubre de 2022, p. 4164. DOI.org (Crossref), https://doi.org/10.3390/polym14194164.
NO Xunta de Galicia
NO Unión Europea
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Fondo Europeo de Desarrollo Regional
DS Docta Complutense
RD 8 abr 2025