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Title: Influence of temperature, ripening time and calcination on the morphology and crystallinity of hydroxyapatite nanoparticles
Authors: Pang, Yongxin
Bao, Xujin
Keywords: Apatite
Crystallinity
Hydroxyapatite nanoparticles
Powders-chemical preparation
Precipitation
Issue Date: 2003
Publisher: © Elsevier Science Ltd
Citation: PANG, Y. and BAO, X., 2003. Influence of temperature, ripening time and calcination on the morphology and crystallinity of hydroxyapatite nanoparticles. Journal of the European Ceramic Society, 23 (10), pp.1697-1704
Abstract: Nano-sized hydroxyapatite (HA) particles were prepared by chemical precipitation through aqueous solutions of calcium chloride and ammonium hydrogenphosphate. The influence of temperature, ripening time and calcination on the crystallinity and morphology of the HA nanoparticles were investigated. It was found that the crystallinity and crystallite size increased with the increase of synthetic temperature and ripening time. XRD and TEM results showed that the morphology change of HA nanoparticles was related to their crystallinity. High crystallinity of HA led to regular shape and smooth surface of the nanoparticles. The crystallinity of HA powders increased greatly after calcination at 650 C for 6 h but the change of the crystallite size after calcination was dependent on the crystallinity and crystallite size of ‘‘as prepared’’ HA nanoparticles.
Description: This paper is closed access.
Version: Published
DOI: 10.1016/S0955-2219(02)00413-2
URI: https://dspace.lboro.ac.uk/2134/21730
Publisher Link: http://dx.doi.org/10.1016/S0955-2219(02)00413-2
ISSN: 0955-2219
Appears in Collections:Closed Access (Materials)

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