| Biomimetic transformations of amorphous calcium phosphate: kinetic and thermodynamic studies. | |
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MedLine Citation:
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PMID: 20532962 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The biomimetic synthesis and phase transformation of XRD amorphous calcium phosphate were studied by application of kinetic, chemical and spectral (XRD and IR) methods and thermodynamic simulations. Two SBFs (SBFc and SBFr), differing in their HCO(3)(-) and Cl(-) ion contents, were used in the maturation studies. It has been proven that the biomimetic maturation accelerated the phase transformation of less thermodynamically stable amorphous calcium phosphate to poorly crystalline hydroxyapatite. Several regularities have been found: (i) kinetic reasons determined the biomimetic precipitation of XRD-amorphous calcium deficient phosphate (ACP); (ii) the precipitated ACP always contained impurities due to co-precipitation, ion substitution and incorporation phenomena; (iii) the increased content of HCO(3)(-) ions in the surrounding microenvironments increased the rate of phase transformation and the concentration of MeHCO(3)(+) (Me = Ca, Mg) species in the solution, but the solubility of CaCO(3) has only been decreased and its precipitation accelerated, thus playing a crucial role in the process under study. |
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Authors:
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D Rabadjieva; R Gergulova; R Titorenkova; S Tepavitcharova; E Dyulgerova; Chr Balarew; O Petrov |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-06-09 |
Journal Detail:
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Title: Journal of materials science. Materials in medicine Volume: 21 ISSN: 1573-4838 ISO Abbreviation: J Mater Sci Mater Med Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-08 Completed Date: 2011-01-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9013087 Medline TA: J Mater Sci Mater Med Country: United States |
Other Details:
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Languages: eng Pagination: 2501-9 Citation Subset: IM |
Affiliation:
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Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bontchev Str., Bl.11, Sofia, Bulgaria. didiarab@svr.igic.bas.bg |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Kinetics Molecular Mimicry* Spectroscopy, Fourier Transform Infrared Thermodynamics X-Ray Diffraction |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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