RT info:eu-repo/semantics/article
T1 Improved corrosion behavior and biocompatibility of porous Titanium samples coated with bioactive Chitosan-based nanocomposites
A1 García Cabezón, Ana Cristina
A1 Godinho, Vanda
A1 Salvo Comino, Coral
A1 Torres Hernández, Yadir
A1 Martín Pedrosa, Fernando
K1 Titanium implants
K1 Implantes de titanio
K1 Electrodeposition
K1 Electrodeposición
K1 Chitosan-based nanocomposites
K1 Nanocompuestos de quitosano
AB Porous titanium implants can be a good solution to solve the stress shielding phenomenon. However, the presence of pores compromises mechanical and corrosion resistance. In this work, porous titanium samples obtained using a space-holder technique are coated with Chitosan, Chitosan/AgNPs and Chitosan/Hydroxyapatite using only one step and an economic electrodeposition method. The coatings’ topography, homogeneity and chemical composition were analyzed. A study of the effect of the porosity and type of coating on corrosion resistance and cellular behavior was carried out. The electrochemical studies reveal that porous samples show high current densities and an unstable oxide film; therefore, there is a need for surface treatments to improve corrosion resistance. The Chitosan coatings provide a significant improvement in the corrosion resistance, but the Chitosan/AgNPs and Chitosan/HA coatings showed the highest protection efficiency, especially for the more porous samples. Furthermore, these coatings have better adherence than the chitosan coatings, and the higher surface roughness obtained favors cell adhesion and proliferation. Finally, a combination of coating and porous substrate material with the best biomechanical balance and biofunctional behavior is proposed as a potential candidate for the replacement of small, damaged bone tissues.
PB MDPI
SN 1996-1944
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/50952
UL https://uvadoc.uva.es/handle/10324/50952
LA eng
NO Materials, 2021, vol. 14, n. 21, 6322
NO Producción Científica
DS UVaDOC
RD 23-nov-2024