Mechanochemical–hydrothermal synthesis of carbonated apatite powders at room temperature

Suchanek, Wojciech L. and Shuk, Pavel and Byrappa, K. and Riman, Richard E. and TenHuisen, Kevor S. and Janas, Victor F. (2002) Mechanochemical–hydrothermal synthesis of carbonated apatite powders at room temperature. Biomaterials, 23 (3). 699 - 710. ISSN 1878-5905

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Crystalline carbonate- and sodium-and-carbonate-substituted hydroxyapatite (CO3HAp and NaCO3HAp) powders were prepared at room temperature via a heterogeneous reaction between Ca(OH)2/CaCO3/Na2CO3 and (NH4)2HPO4 aqueous solution using the mechanochemical–hydrothermal route. X-ray diffraction, infrared spectroscopy, thermogravimetry, and chemical analysis were performed. Room temperature products were phase-pure CO3HAp and NaCO3HAp containing 0.8–12wt of carbonate ions in the lattice. Dynamic light scattering revealed that the median agglomerate size of the room temperature CO3HAp and NaCO3HAp powders was in the range of 0.35–1.6μm with a specific surface area between 82 and 121m2/g. Scanning and transmission electron microscopy confirmed that the carbonated HAp powders consisted of mostly submicron aggregates of nanosized, ≈20nm crystals. The synthesized carbonated apatite powders exhibit chemical compositions and crystallinities similar to those of mineral constituents of hard tissues and therefore are promising for fabrication of bone-resembling implants.

Item Type: Article
Uncontrolled Keywords: Carbonate apatite, Hydroxyapatite, Biocompatibility, Mechanochemical synthesis, Hydrothermal synthesis, Powder
Subjects: F Earth Science > Geology
Divisions: Department of > Earth Science
Depositing User: Manjula P Library Assistant
Date Deposited: 24 Sep 2019 07:26
Last Modified: 24 Sep 2019 07:26

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