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Towards a Better Structural Characterization of Substituted Hydroxyapatites
Wang Y., Nassif N., Bonhomme L., Bonhomme C., Babonneau F. et al
Dans Materials Science and Engineering 2010 - 3rd International Congress on Ceramics , ICC3, Osaka : Japon (2010) - http://hal.in2p3.fr/in2p3-00609272
Sciences du Vivant/Ingénierie biomédicale/Biomatériaux
Towards a Better Structural Characterization of Substituted Hydroxyapatites
Y. Wang1, N. Nassif1, L. Bonhomme1, C. Bonhomme1, F. Babonneau ()1, J.-M. Nedelec2, S. Gomes2, G. Renaudin2, Edouard Jallot ()3
1 :  LCMCP (site Paris VI) - Laboratoire de Chimie de la Matière Condensée de Paris (site Paris VI)
CNRS : UMR7574 – Collège de France – Université Pierre et Marie Curie (UPMC) - Paris VI – Ecole Nationale Supérieure de Chimie de Paris
4, Place Jussieu - Tour 54 - E.5 - couloir 54-55 75252 - Paris Cedex 05
2 :  LMI - Laboratoire des Matériaux Inorganiques
CNRS : UMR6002 – Université Blaise Pascal - Clermont-Ferrand II – Clermont Université – Ecole Nationale Supérieure de Chimie de Clermont-Ferrand
24 Avenue des Landais 63177 AUBIERE CEDEX
3 :  LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]
CNRS : UMR6533 – IN2P3 – Université Blaise Pascal - Clermont-Ferrand II
Campus des Cézeaux 24, avenue des Landais BP 80026 63171 Aubière Cedex
The richness of the apatite structure is an extraordinary ability to accept substitutions and vacancies and this property is intimately related to its adaptability to the biological functions of different tissues. The apatite structure can incorporate a wide variety of ions, of the same or of different charge, which affect both its cationic and anionic sub-lattices. If necessary, charge compensation can be achieved through the combination of ions of different charges and/or through the creation of vacancies, leading to apatites with complex formulae. This presentation will illustrate how multinuclear solid state NMR methods can be efficiently used to describe the local environment of carbonates and silicates in substituted hydroxyapatites, HAp. Two examples will be presented : silicon- substituted biphasic calcium phosphate bioceramics and carbonated hydroxyapatite layer grown on sol-gel glass soaked in SBF.

Communications avec actes
Materials Science and Engineering 2010

3rd International Congress on Ceramics , ICC3
F. Babonneau