Effect of Synthesis Technique and Carbonate Content on the Crystallinity and Morphology of Carbonated Hydroxyapatite

• Published in: Journal of materials science & technology Vol. 29; no. 8; pp. 761 - 764
• Main Authors: Kee, Chia Ching, Ismail, Hanafi, Mohd Noor, Ahmad Fauzi
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-08-2013
• Subjects: Bioceramic; Carbonated hydroxyapatite; Carbonates; Carbonation; Direct pouring; Dropwise; Hydroxyapatite; Nanocomposites; Nanomaterials; Nanostructure; Scanning electron microscopy; X-射线衍射分析; 合成技术; 场发射扫描电子显微镜; 碳酸化; 碳酸盐含量; 碳酸羟基磷灰石; 结晶度; 透射电子显微镜; Dropwise; Direct pouring; Carbonated hydroxyapatite; Bioceramic
• ISSN: 1005-0302; 1941-1162
• DOI: 10.1016/j.jmst.2013.05.016

The syntheses of nanosized carbonated hydroxyapatite （CHA） were performed by comparing dropwise and direct pouring of acetone solution of Ca（NO3）2·4H2O into mixture of （NH4）2HPO4 and NH4HCO3 at room temperature controlled at pH 11. Direct pouring method was later applied to study the increment of carbonate content in syntheses. The as-synthesized powders were characterized by various characterization techniques. The crystallographic results of the produced powders were obtained from X-ray diffraction analysis, whilst the carbonate content in the produced powders was determined by the CHNS/O elemental analyzer. Fourier transform infrared analysis confirmed that the CHA powders formed were B-type. Field emission scanning electron microscopy revealed that the powders were highly agglomerated in nanosized range and hence energy filtered transmission electron microscopy was employed to show elongated particles which decreased with increasing carbonate content.