Bilayers Coating on Titanium Surface: The impact on the Hydroxyapatite Initiation

Christelle Arnould, Jessica Denayer, Michael Planckaert, Joseph Delhalle, Zineb Mekhalif

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    Résumé

    Most of the actual orthopaedic devices, widely made of titanium and its alloys, present different weaknesses like ions release and risks of loosening over a long period. To solve such problems, new developments in surface modification are crucial. This work is an extension of our recent effort on the development and improvement of a multifunctional inorganic/organic bilayers coating. A thin tantalum oxide layer is formed by sol–gel synthesis followed by the modification with organophosphonic acids of the tantalum oxide layer. We focus in particular on the effect of the bilayers coating on corrosion resistance and hydroxyapatite growth rate by immersion in a simulated body fluid solution. It is also highlighted that the structure of the organophosphonic acid is of major importance on the osteoinduction character of the material.
    langue originaleAnglais
    Pages (de - à)75-82
    Nombre de pages8
    journalJournal of colloid and interface science
    Volume341
    Numéro de publication1
    Les DOIs
    Etat de la publicationPublié - 2010

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