Effect of Synthesis Technique and Carbonate Content on the Crystallinity and Morphology of Carbonated Hydroxyapatite
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2013年第8期
论文作者：Chia Ching Kee Hanafi Ismail Ahmad Fauzi Mohd Noor
文章页码：761 - 764
摘 要：<正>The syntheses of nanosized carbonated hydroxyapatite（CHA） were performed by comparing dropwise and direct pouring of acetone solution of Ca（N03）2-4H20 into mixture of（NH4）2HP04 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.
Chia Ching Kee，Hanafi Ismail，Ahmad Fauzi Mohd Noor
School of Materials and Mineral Resources Engineering,Engineering Campus,Universiti Sains Malaysia,14300 Nibong Tebal,Penang,Malaysia
摘 要：<正>The syntheses of nanosized carbonated hydroxyapatite（CHA） were performed by comparing dropwise and direct pouring of acetone solution of Ca（N03）2-4H20 into mixture of（NH4）2HP04 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.
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