Formation of Biomimetic Apatite on Calcium Phosphate Foam Ceramic in a Concentrated Model Solution

Maslova, L.Y.; Krut’ko, V.K.; Musskaya, O.N.; Safronova, T.V.; Kulak, A.I.

Авторы: Maslova L.Yu, Krut’ko V.K., Musskaya O.N., Safronova T.V., Kulak A.I.
Журнал: Inorganic Materials: Applied Research
Том: 14
Номер: 2
Год издания: 2023
Первая страница: 392
Последняя страница: 396
DOI: 10.1134/S2075113323020314
Аннотация: By firing polyurethane foam templates (STR brand, 12 pores per cm, China) with a porosity of ~65% at 1200°C, an open-pore calcium phosphate foam ceramic was obtained using a highly concentrated suspension based on synthetic hydroxyapatite heat-treated at 800°C, monocalcium phosphate monohydrate, and 0.8% polyvinyl alcohol. The resulting calcium phosphate foam ceramic after modification in SBF (simulated body fluid) solution concentrated by 5 times (SBF×5) consisted of β-tricalcium phosphate, β-calcium pyrophosphate, and biomimetic apatite and had a porosity of 53–59% and a static strength of ~0.05 MPa.The formed biomimetic apatite consisting of amorphous calcium phosphate Ca9(PO4)6 and apatite tricalcium phosphate Ca9HPO4(PO4)5OH crystallizes into β-tricalcium phosphate at 1200°C. Calcium phosphate foam ceramic modified with biomimetic apatite, after soaking in 5% hydroxyapatite gel and SBF×5, simulating a bone defect in vitro, in parallel with the formation of biomimetic apatite, is partially destroyed, which confirms its high bioactivity and resorbability. Keywords: calcium phosphate foam ceramic, tricalcium phosphate, hydroxyapatite, concentrated simulatedbody fluid (SBF×5), biomimetic apatite, resorbability
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