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Mechanochemical-hydrothermal preparation of crystalline hydroxyapatite powders at room temperature

Published online by Cambridge University Press:  31 January 2011

Pavel Shuk
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers University, 607 Taylor Road, Piscataway, New Jersey 08854-8087
Wojciech L. Suchanek
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers University, 607 Taylor Road, Piscataway, New Jersey 08854-8087
Tian Hao
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers University, 607 Taylor Road, Piscataway, New Jersey 08854-8087
Eric Gulliver
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers University, 607 Taylor Road, Piscataway, New Jersey 08854-8087
Richard E. Riman
Affiliation:
Department of Ceramic and Materials Engineering, Rutgers University, 607 Taylor Road, Piscataway, New Jersey 08854-8087
Mamoru Senna
Affiliation:
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
Kevor S. TenHuisen
Affiliation:
Johnson & Johnson Corporate Biomaterials Center, Rt. 22 W, P.O. Box 151, Somerville, New Jersey 08876-0151
Victor F. Janas
Affiliation:
Johnson & Johnson Corporate Biomaterials Center, Rt. 22 W, P.O. Box 151, Somerville, New Jersey 08876-0151
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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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Rapid Communications
Copyright
Copyright © Materials Research Society 2001

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Mechanochemical-hydrothermal preparation of crystalline hydroxyapatite powders at room temperature
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