Effects of Aging and Temperature on the Oriental Growth of Hydroxyapatite

Abstract:

In order to find a simple way to prepare oriental HA, only by controlling the preparation conditions, a co-precipitation method was used to prepare an oriented HA. The influences of temperature and aging on its directional growth were investigated kinetically and thermodynamically. The chemical composition was characterized by X-Ray diffraction and Fourier transform infrared. The morphologies were observed by scanning electron microscopy (SEM). The oriented parameters of HA (c/a) were calculated by Scherrer equation. The results show that the temperature rise in the process of synthesis, aging or calcining inhibited the growth of HA crystal in the direction of c-axis. Aging for 24 h benefited the growth along c-axis, whereas aging for 36 h was in favor of the decreasing of the c/a value. The supernatant-replacement during aging exerted the same effect on the growth with the rising of temperature. The SEM analysis result shows that the morphology of the produced HA particles looked like a uniform needle shape and had a good dispersion.

• Periodical: Advanced Materials Research (Volumes 308-310)
• Pages: 2180-2186
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.308-310.2180
• Online since: August 2011
• Authors: Hui Yang, Fei Fei Huang, Ke Wei Xu
• Keywords: Fourier Transformation Infrared, Hydroxyapatite (HAP), Oriental Growth, Thermal Property, X-Ray Diffraction (XRD)

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