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2009•Polish Journal of ChemistryRequires access

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

Irma Bogdanovičienė, Kaia Tõnsuaadu, Aivaras Kareiva

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Abstract

An aqueous sol-gel chemistry synthesis route has been developed to prepare calcium hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , CHA) samples at different gelation temperatures. In the sol-gel processes, an aqueous solution oftartaric 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 hydroxyapatite powders with desired morphological properties.

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What this paper is about

An aqueous sol-gel chemistry synthesis route has been developed to prepare calcium hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , CHA) samples at different gelation temperatures. In the sol-gel processes, an aqueous solution oftartaric 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 hydroxyapatite powders with desired morphological properties.

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Available abstract

An aqueous sol-gel chemistry synthesis route has been developed to prepare calcium hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , CHA) samples at different gelation temperatures. In the sol-gel processes, an aqueous solution oftartaric 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 hydroxyapatite powders with desired morphological properties.

Key concepts: Thermogravimetric analysis, Chemistry, Differential thermal analysis, Crystallite, Aqueous solution, Fourier transform infrared spectroscopy, Sol-gel, Scanning electron microscope

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Influence of Gelation Temperature on the Properties of Sol-Gel-Derived Calcium Hydroxyapatite Ceramics — Research Paper | ScholarLens