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Mechanochemical-hydrothermal preparation of crystalline hydroxyapatite powders at room temperature

  • Pavel Shuk (a1), Wojciech L. Suchanek (a1), Tian Hao (a1), Eric Gulliver (a1), Richard E. Riman (a1), Mamoru Senna (a2), Kevor S. TenHuisen (a3) and Victor F. Janas (a3)...

Abstract

Crystalline hydroxyapatite (HAp) powders were prepared at room temperature from heterogeneous reaction between Ca(OH)2powders and (NH4)2HPO4 solutions via the mechanochemical-hydrothermal route. X-ray diffraction, infrared spectroscopy, thermogravimetric characterization, and chemical analysis were performed, and it was determined that the room temperature products were phase-pure, thermally stable HAp with a nearly stoichiometric composition. Dynamic light scattering revealed that the dispersed particle size distribution of the room temperature HAp powders was in the range of 0.15–3.0 μm with a specific surface area of ≈90 m2/g. Both specific surface area measurements and scanning electron microscopy confirmed that the HAp powders consisted of agglomerates containing hundreds of ≈20 nm HAp crystals.

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Mechanochemical-hydrothermal preparation of crystalline hydroxyapatite powders at room temperature

  • Pavel Shuk (a1), Wojciech L. Suchanek (a1), Tian Hao (a1), Eric Gulliver (a1), Richard E. Riman (a1), Mamoru Senna (a2), Kevor S. TenHuisen (a3) and Victor F. Janas (a3)...

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