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Chemical Diversity of Apatites

Rey, Christian and Combes, Christèle and Drouet, Christophe and Sfihi, Hocine Chemical Diversity of Apatites. (2006) Advances in Science and Technology, vol. 49 . pp. 27-36. ISSN 1662-8969

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/AST.49.27

Abstract

Apatites can accommodate a large number of vacancies and afford multiple ionic substitutions determining their reactivity and biological properties. Unlike other biominerals they offer a unique adaptability to various biological functions. The diversity of apatites is essentially related to their structure and to their mode of formation. Special charge compensation mechanisms allow molecular insertions and ion substitutions and determine to some extent their solubility behaviour. Apatite formation at physiological pH involves a structured surface hydrated layer nourishing the development of apatite domains. This surface layer contains relatively mobile and exchangeable ions, and is mainly responsible for the surface properties of apatite crystals from a chemical (dissolution properties, ion exchange ability, ion insertions, molecule adsorption and insertions) and a physical (surface charge, interfacial energy) point of view. These characteristics are used by living organisms and can also be exploited in material science.

Item Type:Article
Additional Information:Thanks to Trans Tech Publications editor. The definitive version is available at http://www.scientific.net The original PDF of the article can be found at Advances in Science and Technology website : http://www.scientific.net/AST
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Ecole Supérieure de Physique et de Chimie Industrielles - ESPCI (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Celine Cabaup
Deposited On:09 Jun 2009 08:50

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