English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/111985
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Electrochemical analysis of the UV treated bactericidal Ti6Al4V surfaces

AuthorsPacha-Olivenza, M. A.; Gallardo-Moreno, A. M.; Vadillo-Rodríguez, V.; González-Martín, M. L.; Pérez-Giraldo, C.; Galván Sierra, Juan Carlos
KeywordsElectrochemical analysis
Biomaterial Ti6Al4V
Issue Date2013
CitationMATERIALS SCIENCE & ENGINEERING: C 33 (3): 1789-1794 (2013)
AbstractThis research investigates in detail the bactericidal effect exhibited by the surface of the biomaterial Ti6Al4V after being subjected to UV-C light. It has been recently hypothesized that small surface currents, occurring as a consequence of the electron-hole pair recombination taking place after the excitation process, are behind the bactericidal properties displayed by this UV-treated material. To corroborate this hypothesis we have used different electrochemical techniques, such as electrochemical impedance spectroscopy (EIS), potentiodynamic polarization plots and Mott-Schottky plots. EIS and Mott-Schottky plots have shown that UV-C treatment causes an initial increase on the surface electrical conduction of this material. In addition, EIS and polarization plots demonstrated that higher corrosion currents occur at the UV treated than at the non-irradiated samples. Despite this increase in the corrosion currents, EIS has also shown that such currents are not likely to affect the good stability of this material oxide film since the irradiated samples completely recovered the control values after being stored in dark conditions for a period not longer than 24 h. These results agree with the already-published in vitro transitory behavior of the bactericidal effect, which was shown to be present at initial times after the biomaterial implantation, a crucial moment to avoid a large number of biomaterial associated infections. © 2013 Elsevier B.V. All Rights Reserved.
Identifiersdoi: 10.1016/j.msec.2012.12.079
issn: 0928-4931
Appears in Collections:(CENIM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.