Formation of Secondary Phases on Hydroxyapatite Powders for Bone Regeneration: Effect of Water Source

Vera  Lourenço; Susana Dias; Carlos A. Nogueira; Fernando A. Costa Oliveira

doi:10.4028/www.scientific.net/MSF.587-588.37

Paper Titles

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Rheology of Chitosan and Genipin Solutions
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Contrasting Morphology of Calcium Phosphate Powders Prepared by the Wet Method Using Poly (Ethylene Glycol)
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Formation of Secondary Phases on Hydroxyapatite Powders for Bone Regeneration: Effect of Water Source
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KrF Excimer Laser Ablation of Human Enamel
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Physical Properties of an Artificial Extracellular Matrix Based on a Crosslinked Elastin-Like Polymer
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Preparation of Porous Glass Scaffolds by Salt Sintering Technique
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Assessment of the Corrosion Behavior of Nd-Fe-B Magnets Used in Dentistry
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HomeMaterials Science ForumMaterials Science Forum Vols. 587-588Formation of Secondary Phases on Hydroxyapatite...

Formation of Secondary Phases on Hydroxyapatite Powders for Bone Regeneration: Effect of Water Source

Abstract:

This study focus on the synthesis of Ca-deficient apatites (CDA) by using the wet chemical precipitation method in demineralised water solutions at pH=7 and synthesis temperature of 90 °C. Upon calcination at 1000°C, the resulting HAP powders decomposed leading to the formation of small amounts of β-TCP. Surprisingly, under some conditions, minor amounts of α- TCP were also formed at 1000°C together with β-TCP. The appearance of α-TCP is favoured by the absence of mineral ions in the precipitation medium, which in turn depends on the purity of the water used. Factors affecting the formation of both β-TCP and α-TCP are discussed.