Hydrothermal synthesis and nanostructure of carbonated calcium hydroxyapatite |
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| Authors: | V. Jokanović D. Izvonar M. D. Dramićanin B. Jokanović V. Živojinović D. Marković B. Dačić |
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| Affiliation: | (1) Institute of Nuclear Sciences “Vinča”, P.O. Box 522, 11001 Beograd, Serbia and Montenegro;(2) Faculty of Contemporary Arts, Kralja Petra 6, 11000 Belgrade, Serbia and Montenegro;(3) Department Termochemie und Mikrokinetik, TU Clausthal, Institut fur Metallurgie, Clausthal, Germany;(4) Clinic of Preventive and Pediatric Dentistry, School of Dentistry, 11000 Belgrade, Serbia and Montenegro;(5) Department of Chemical Engineering, University Ockland, Ockland, New Zeland |
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| Abstract: | The influence of precursor concentration, pressure, temperature and time of hydrothermal synthesis on the development of calcium hydroxyapatite structure has been analyzed. The obtained results show that it is possible to adjust the conditions of hydrothermal synthesis from solutions of relatively high concentrations to obtain calcium hydroxyapatite nanopowders of well-defined structure. The relationship between the synthesis and the lattice parameters, as well as the crystallite size and the microstructure of synthesized hydroxyapatite has been established. The synthesized powders are preferentially carbonated hydroxyapatite of the B type in the form of agglomerates that accommodate two-modal size pores of 1.5–10 and 50–200 nm. The structure of calcium hydroxyapatite particles consists of crystallites 8–22 nm in size, bound within prime particles, which size is between 10 and 63 nm, that in turn form bigger agglomerates 200 nm in size, which further cluster building up agglomerates 5–20 μm in size. |
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