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Obadia, L., Deniard, P., Alonso, B., Rouillon, T., Jobic, S., Guicheux, J., Julien, M., Massiot, D., Bujoli, B. & Bouler, J. M. (2006) Effect of sodium doping in beta-tricalcium phosphate on its structure and properties. Chem. Mat. 18 1425–1433. 
Added by: Florent Boucher (2016-05-12 13:21:37)
Type de référence: Article
DOI: 10.1021/cm052135f
Numéro d'identification (ISBN etc.): 0897-4756
Clé BibTeX: Obadia2006
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Catégories: MIOPS
Mots-clés: bisphosphonate delivery, calcium phosphates, crystal-structure, double-blind, echo double-resonance, powder diffraction, quadrupolar nuclei, skeletal metastases, x-ray-diffraction, zoledronic acid
Créateurs: Alonso, Bouler, Bujoli, Deniard, Guicheux, Jobic, Julien, Massiot, Obadia, Rouillon
Collection: Chem. Mat.
Consultations : 9/350
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
For the preparation of beta-TCP and biphasic calcium phosphates (BCPs, mixtures of hydroxyapatite and beta-TCP), the presence of sodium in the reaction medium results in the incorporation of sodium in the beta-TCP network, by substitution of some calcium sites. Accordingly, a decrease of the unit cell volume of beta-TCP was observed with increasing sodium substitution. The distribution of sodium in the beta-TCP structure, as a function of the amount incorporated, was probed using IT and Na-23 MAS NMR and 31P{Na-23} REDOR experiments. It was shown that an estimation of the sodium content in beta-TCPs could be obtained from the modeling of their IT MAS NMR spectra. Moreover, the incorporation of sodium in beta-TCPs results in improved mechanical properties, without affecting the biocompatibility of the ceramics.
Added by: Florent Boucher  
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