Molecular functionalization of tantalum oxide surface towards development of apatite growth

D. Aubry, C. Volcke, Ch. Arnould, C. Humbert, P.A. Thiry, J. Delhalle, Z. Mekhalif

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Résumé

We have studied the apatite growth dynamics on tantalum oxide surfaces. This nucleation is obtained via an organosilane intermediate layer between the apatite and the substrate surface. Four organosilane layers (differing by their terminal functionality) were investigated. Their characterization with atomic force microscopy and other techniques such as X-ray photoelectron spectroscopy (XPS) and wetting measurements highlighted the influence of the organosilane terminal groups on the apatite growth rates. Results revealed that apatite is indeed growing faster on phosphate terminal groups than on the three other groups studied (vinyl, hydroxyl and carboxyl). © 2008 Elsevier B.V. All rights reserved.
langue originaleAnglais
Pages (de - à)4765-4772
Nombre de pages8
journalApplied Surface Science
Volume255
Numéro de publication9
Les DOIs
Etat de la publicationPublié - 15 févr. 2009

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