Formation of biomimetic apatite on calcium phosphate foam ceramics in standard and carbonate-free model solutions
V.K. Krut’ko, L.Yu. Maslova, O.N. Musskaya, A.I. Kulak
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Abstract: The biomimetic apatite was formed in the carbonate-free Simulated Body Fluid model solutions of standard composition on calcium phosphate foam ceramics, consisting of α/β-tricalcium phosphate and β-calcium pyrophosphate. The apatite phase composition was determined by the composition of Simulated Body Fluid solution used during soaking. The equilibrium shift in the model solution during the interaction of calcium phosphate foam ceramics with ions of the solution leads to the apatite precipitation in the aggregated particles form. The excess content of H+ ions in carbonatefree Simulated Body Fluid leads to pH sharp fluctuations and the inclusion of hydrated СaClH2PO4 impurity into apatite spherulites. An increase in the soaking time in Simulated Body Fluid model solutions to 21-28 days leads to coarsening of apatite spherulites to 5-6 µm. The foam ceramics surface morphology after soaking changes insignificantly with a slight decrease in the through porosity by 1-3% and two times increase in static strength due to the healing of microdefects in the foam ceramics structure.
Keywords: calcium phosphate foam ceramics, tricalcium phosphate, SBF (Simulated Body Fluid), biomimetic apatite, spherulites
- Valentina K. Krut’ko – Ph. D., Assistant Professor, Head of the Laboratory of Photochemistry and Electrochemistry, Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
- Lyubov Yu. Maslova – Junior Researcher, Photochemistry and Electrochemistry Laboratory, Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
- Olga N. Musskaya – Ph. D., Assistant Professor, Leading Researcher, Photochemistry and Electrochemistry Laboratory, Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
- Anatoly I. Kulak – Academician, National Academy of Sciences of Belarus, D. Sc., Professor, Director, Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Krut’ko, V.K. Formation of biomimetic apatite on calcium phosphate foam ceramics in standard and carbonate-free model solutions / V.K. Krut’ko, L.Yu. Maslova, O.N. Musskaya, A.I. Kulak // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 982-991. DOI: 10.26456/pcascnn/2023.15.982. (In Russian).
Full article (in Russian): download PDF file
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