Relación microestructura-propiedades y comportamiento tribológico de nuevos nanocomposites
- Minguez Enkovaara, Luis Francisco
- Francisco José Carrión Vilches Director
- María Dolores Bermúdez Olivares Co-director
Defence university: Universidad Politécnica de Cartagena
Fecha de defensa: 09 March 2023
- Francisco Guillermo Diaz Baños Chair
- Ana Eva Jiménez Ballesta Secretary
- Cayetano Espejo Conesa Committee member
Type: Thesis
Abstract
Polymethylmethacrylate (PMMA) is a globally widespread thermoplastic in our ordinary life with outstanding properties for plastics like its transparency, biocompatibility, weatherability, rigidity, and processability. In this work, graphene-oxide-based nanoadditives are incorporated into a PMMA matrix to enhance its tribological properties. As a result, different concentrations of graphene oxide, some of them functionalized with 1- octyl-3-methylimidazolium tetrafluoroborate ([Omim]BF4) room temperature ionic liquid, have been added and melt-blended by extrusion and molding injection industrial processes. In pursuance of a complete study of the structural and tribological behavior of the new nanocomposite materials, linear oscillatory sliding contact and multi-scratch tribological tests, together with structural and thermal characterization techniques are applied (XRD, XPS, Raman spectroscopy, TEM, TGA, DSC, DMA) correlating the results to their nano-phase concentrations