Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Hassan Chaair
Laboratory of Process and Environment Engineering, Faculty of Sciences and Technologies Mohammedia. University Hassan II of Casablanca, MoroccoPublications
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Research Article
Thermal Behavior and Phase Transformations of Biomimetic Oxygenated Apatites
Author(s): Soumia Belouafa*, Hassan Chaair and Khalid Digua
High temperature calcination is an essential step for the production of some apatite-based biomaterials. This requires an in-depth study of thermal stability and transformations during heating. The thermal behavior and phase transformations of biomimetic oxygenated apatites, prepared from different calcium salts (CaCO3, Ca(NO3)2, CaCl2) and orthophosphate (H3PO4), are examined, in the present work by chemical analysis, thermo-gravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR) and by X-ray diffraction (XRD). The thermal analysis gives evidence for the dismutation of oxygenated species (O22-, O2) at 400°C and the decomposition of the non-stoichiometric apatitic structure to a biphasic mixture (hydroxyapatite (HAP) and beta-tricalcium phosphate (β-TCP) (HAP/β-TCP)) at 900&or.. Read More»
DOI: 10.4172/0975-413X.14.4.17-25
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