NDLI: Hydroxyapatite-calcium carbonate ceramic composite materials

Content Provider	Springer Nature Link
Author	Gol’dberg, M. A. Smirv, V. V. Kutsev, S. V. Shibaeva, T. V. Shvorneva, L. I. Sergeeva, N. S. Sviridova, I. K. Bariv, S. M.
Copyright Year	2010
Abstract	Hydroxyapatite/calcium carbonate (CC) composite powders containing up to 50 wt % CO32−, have been prepared via precipitation from aqueous solutions. According to chemical analysis data, the CO32− content of the powders coincides with the intended one over the entire composition range studied. With increasing CO32− content, the specific surface area of the powders decreases because of the formation and growth of large needlelike CC crystals up to 1.5 μm in size. The addition of low-melting-point alkali carbonates to the starting powder mixture reduces the sintering temperature of the powders to below 720°C, thereby preventing the thermal decomposition of CC. The highest bending strength, up to 76 MPa, is offered by the materials with the lowest CC content, about 20 wt %, and an average crystal size of 100 nm. The solubility of the composites gradually increases with CC content. In vitro experiments with a human fibroblast model (MTT test) demonstrate that the composites have zero cytotoxicity.
Starting Page	1269
Ending Page	1273
Page Count	5
File Format	PDF
ISSN	00201685
Journal	Inorganic Materials
Volume Number	46
Issue Number	11
e-ISSN	16083172
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-11-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Industrial Chemistry/Chemical Engineering Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Chemical Engineering Inorganic Chemistry

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