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1 Polish Journal of Chemistry

1 2009

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Influence of Gelation Temperature on the Properties of Sol-Gel-Derived Calcium Hydroxyapatite Ceramics

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Bogdanoviciene I. , Tonsuaadu K. , Kareiva A.

2009

tom Vol. 83, nr 1

47-55

An aqueous sol-gel chemistry synthesis route has been developed to prepare calcium hydroxyapatite (Ca10(PO4)6(OH)2, CHA) samples at different gelation temperatures. In the sol-gel processes, an aqueous solution of tartaric acid as complexing agent was used. The phase transformations, composition and micro-structural properties of the polycrystalline samples were studied by thermogravimetric analysis (TG), differential thermal analysis (DTA), energy-dispersive spectrometry (EDS), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction analysis (XRD) and scanning electron microscopy (SEM). It was clearly demonstrated that temperature of initial stage of the preparation of CHA is a crucial parameter to obtain monophasic calcium hydroxy apatite powders with desired morphological properties.