Thermal analysis on hydroxyapatite synthesis through mechanochemical method

Alqap, A.S.F. and S., Adzila and I. , Sopyan and M. , Hamdi and S. , Ramesh (2011) Thermal analysis on hydroxyapatite synthesis through mechanochemical method. In: The 9th International Conference on Modelling in Medicine and Biology, 26 - 28 July 2011, Riga, Latvia.

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Abstract

Thermal analysis of hydroxyapatite formation through dry mechanochemical method has been studied. The calcium phosphate was synthesized using calcium hydroxide and di-ammonium hydrogen phosphate as the precursors. The ball milling of 1/6 ball-powder mass ratio was employed on mixtures of calcium hydroxide and di-ammonium hydrogen phosphate in three different speeds 170, 270 and 370 rpm for 15 h. As ball-milled powders were then sintered at 1150, 1250 and 1350 o C for 2 h, then subjected to TGA, XRD and FTIR for phase characterization. Calcium phosphates with ammonium are phases of the material. The ammonium is trace of phosphorus precursor. Choosing condition of the process and type of precursors determines type of reactions and its products.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Heating, Milling, Hydroxyapatite, Calcium phosphate, Phase transformation.
Subjects:Q Science > QD Chemistry
ID Code:2071
Deposited By:M.Iqbal Zainal A
Deposited On:20 Mar 2012 11:21
Last Modified:20 Mar 2012 11:21

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