RT journal article
T1 Enhanced Properties of 3D-Printed Graphene Oxide Nanocomposites through Itaconic Acid Polyester Grafting
A1 Maturi, Mirko
A1 Maturi, Simone
A1 Sanz de León, Alberto
A1 Migliorini, Lorenzo
A1 Mata Fernández, María de la
A1 Benelli, Tiziana
A1 Giorgini, Loris
A1 Milani, Paolo
A1 Comes Franchini, Mauro
A1 Molina Rubio, Sergio Ignacio
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 additive manufacturing
K1 graphene oxide
K1 nanocomposites
K1 polymer grafting
K1 vat photopolymerization
AB Vat photopolymerization (VP) is a powerful additive manufacturing process to produce high-resolution 3D objects from liquid photocurable resins, but the mechanical performance of its standard materials restricts its use in high-demanding applications. In this study, graphene oxide (GO), a widely investigated nanomaterial, was surface-functionalized by grafting the sustainable and photocurable poly(butylene itaconate-co-adipate) (PBIA) polyester to address these limitations. The covalent grafting of PBIA significantly improved the colloidal stability and dispersibility of GO in photocurable formulations, eliminating the need for extensive homogenization during the formulation of the nanocomposite resin. PBIA-coated GO (GO@PBIA) was easily miscible with VP resins, enabling the fabrication of 3D-printed nanocomposites with superior mechanical properties. At low filler concentrations (0.05 wt %), the GO@PBIA composites increased their elastic modulus up to 57% and tensile strength up to 100% compared to the base polymer, outperforming analogous composites prepared with unmodified GO. Surface modification also enhanced the deformability of the matrix, making these composites suitable for applications under tensile and flexural loads. Optical and morphological analyses confirmed the homogeneous distribution of GO@PBIA within the polymer matrix, demonstrating improved filler-matrix interactions, while electrical conductivity measurements proved that the surface modification approach proposed does not affect the conductive conjugated π system of the nanomaterial. This work highlights the potential of polymer-grafted GO as a multifunctional nanofiller to enhance the mechanical properties and processability of VP-based materials, paving the way for their use in high-performance applications.
PB American Chemical Society
SN 2637-6105
YR 2025
FD 2025
LK http://hdl.handle.net/10498/37969
UL http://hdl.handle.net/10498/37969
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026