resumo
Atomic/molecular layer deposition (ALD/MLD) is ideally suited for addressing the challenges faced by the new generation biomedical technologies through surface and interface modification with organic-inorganic hybrid coatings, which are emerging as an alternative to inorganic coatings. In this study, we present a feasible strategy for modifying the surface of magnesium alloy (AZ31) screw-like substrates with titanium-based hybrid coatings, using titanium tetraisopropoxide as the metal-bearing precursor, and a simple aliphatic bi-functional alcohol, such as ethylene glycol, as the organic precursor. Results demonstrated that the titanium-based hybrid coating was evenly distributed without obvious defects on the AZ31 screw-like substrates while providing physical protection. In addition, the cytocompatibility of the titanium-based hybrid coating was validated through the cytotoxicity assay, revealing its potential for future biomedical applications.
palavras-chave
ATOMIC LAYER DEPOSITION; MAGNESIUM ALLOY AZ31; CORROSION-RESISTANCE; THIN-FILMS; SURFACE; TIO2; ANATASE; DESIGN
categoria
Chemistry
autores
Silva, RM; Oliveira, FJ; Lima, MF; Silva, NA; Miranda, G
nossos autores
Filipe José Alves de Oliveira
Investigador Principal
Georgina Miranda
Professor Associado com Agregação
Ricardo Manuel Fonseca Lopes da Silva
Técnico de LaboratórioProjectos
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
agradecimentos
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MCTES (PIDDAC). The authors acknowledge R. Soares, M. Ferro and A. V. Gir & atilde;o for assistance with the XRR/GIXRD and SEM/STEM/HRTEM measurements, respectively. A. J. S. Fernandes is acknowledged for the Raman measurements. This work has also been funded by the Portuguese Foundation for Science and Technology (FCT) through the projects UIDB/50026/2020 (https://doi.org/10.54499/UIDB/50026/2020), UIDP/50026/2020 (https://doi.org/10.54499/UIDP/50026/2020) and LA/P/0050/2020 (https://doi.org/10.54499/LA/P/0050/2020), and through the Scientific Employment Stimulus to NAS (2023.09247.CEECIND).