Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: In Hydrothermal Synthesis of Hydroxyapatite Microspheres with Polyvinylpyrrolidone as Template
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 771-776)
Author(s): Yan Dou, College of Materials Science and Engineering,Nanjing University of Technology,Nanjing,China
Feng Cao, College of Materials Science and Engineering,Nanjing University of Technology,Nanjing,China
Yan-bao Li, College of Materials Science and Engineering,Nanjing University of Technology,Nanjing,China
Dong-xu Li, College of Materials Science and Engineering,Nanjing University of Technology,Nanjing,China
Abstract: Hydroxyapatite (HA) microspheres were synthesized using a homogeneous precipitation method under hydrothermal conditions, and using polyvinylpyrrolidone (PVP) as template and Ca (NO3)2·4H2O and (NH4)2HPO4 as reagents. The effect of hydroxythermal reaction temperature and template agent concentration on the morphology and particle size of HA microspheres was studied. The chemical composition, crystal structure, morphology of the obtained sample were characterized by X-ray powder diffraction analysis (XRD), scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). The results indicate that the presence of PVP changed the growth pattern of HA crystallites. The building units of HA microspheres were crystals shaped in needle flake. Both the morphology and particle size could be controlled by adjusting the PVP concentration and hydroxythermal reaction temperature.
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