Mechanochemical-hydrothermal preparation of crystalline hydroxyapatite powders at room temperature
| Autor: | Richard E. Riman, Eric Gulliver, Wojciech L. Suchanek, Tian Hao, Pavel Shuk, Mamoru Senna, Victor F. Janas, Kevor S. Tenhuisen |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Thermogravimetric analysis
Materials science Scanning electron microscope Mechanical Engineering Infrared spectroscopy Condensed Matter Physics Hydrothermal circulation Chemical engineering Dynamic light scattering Mechanics of Materials Agglomerate Specific surface area Particle-size distribution General Materials Science |
| Zdroj: | Journal of Materials Research. 16:1231-1234 |
| ISSN: | 2044-5326 0884-2914 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink