Synthesis of Carbonate and Fluorine Substituted Nanocrystalline Hydroxyapatite by Mechanochemical Method

Amruthaluru Saikiran; Siva Kumar Mamidi; Manu Harilal; Sampatirao Hariprasad; Rameshbabu Nagumothu

doi:10.4028/www.scientific.net/KEM.833.204

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 833Synthesis of Carbonate and Fluorine Substituted...

Synthesis of Carbonate and Fluorine Substituted Nanocrystalline Hydroxyapatite by Mechanochemical Method

Abstract:

The present work is aimed at the synthesis of fluorine substituted and carbonate substituted hydroxyapatites (FHA, CHA) by the mechanochemical method. The shortest milling time required for the synthesis of FHA and CHA using calcium hydroxide and diammonium hydrogen phosphate as precursors was estimated. In addition to the Ca and P precursors, ammonium carbonate and ammonium fluoride were used for carbonate and fluorine substitutions, respectively. Thermal stability of the synthesized FHA and CHA was evaluated. The phase composition and crystallite size were evaluated by the X-Ray Diffraction (XRD). Fourier Transform Infrared Spectroscopy (FTIR) technique was employed to confirm the functional groups corresponding to the FHA and CHA. Thermal stability of the FHA and CHA was determined by the XRD and FTIR studies on the FHA and CHA powders annealed at 900 ^°C. From the XRD and FTIR results, it is observed that the 30 min milling time is the shortest time for the complete formation of FHA and CHA. The powders synthesized with a minimum milling time of 30 min exhibited better thermal stability.

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Key Engineering Materials (Volume 833)

Pages:

204-208

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.833.204

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Online since:

March 2020

Authors:

Amruthaluru Saikiran, Siva Kumar Mamidi, Manu Harilal, Sampatirao Hariprasad, Rameshbabu Nagumothu*

Keywords:

Mechanochemical, Nanocrystalline, Substituted Hydroxyapatite

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