RT journal article
T1 3D-Printing of Highly Piezoelectric Barium Titanate Polymer Nanocomposites with Surface-Modified Nanoparticles at Low Loadings
A1 Maturi, Mirko
A1 Migliorini, Lorenzo
A1 Villa, Sara Moon
A1 Santaniello, Tommaso
A1 Fernández Delgado, Natalia
A1 Molina Rubio, Sergio Ignacio
A1 Milani, Paolo
A1 Sanz de León, Alberto
A1 Comes Franchini, Mauro
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 additive manufacturing
K1 barium titanate
K1 nanocomposites
K1 piezoelectric materials
K1 surface modification
K1 vat photopolymerization
AB This work describes the development and characterization of tetragonal barium titanate nanoparticles (BTO NPs) and their surface functionalization with dopamine dodecylamine (DDA), a lipophilic organic ligand. The so-obtained lipophilic NPs (BTO-DDA) are then formulated at low loadings (< 5 wt.%) into liquid photocurable resins for vat photopolymerization (VP) and 3D printed into solid objects. The printed composites are mechanically characterized in order to assess the effect of the nanomaterial on the mechanical properties of the 3D printed polymer, revealing no significant variations in the mechanical properties (tensile or flexural) of the nanocomposites compared to the original polymer matrix. In light of these results, the printed nanocomposites are studied in terms of their capacity to generate a separation of charge by the piezoelectric effect, typical of the BTO crystal structure. This study reveals that BTO-loaded nanocomposites display outstanding piezoelectric coefficients as high as 50 pC/N when BTO-DDA is formulated at 3.0 wt.%, only slightly less than one-third of the piezoelectric coefficient previously reported for bulk BTO, while preserving the mechanical properties of the polymer matrix.
PB John Wiley and Sons Inc
SN 1616-3028
YR 2025
FD 2025
LK http://hdl.handle.net/10498/35622
UL http://hdl.handle.net/10498/35622
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026