Synthesis and Phase Transformation of Calcium Phosphate Prepared from Chicken Eggshells and Ammonium Phosphate
(0) Material that shows hydroxyapatite and β-tricalcium phosphate phases is called biphasic calcium phosphate (BCP). In present work, biphasic calcium phosphate was prepared and characterized for future applications on the utilization of bioactivity of HAp and resorbability of β-TCP properties. It was simply synthesized by precipitation method using eggshell as the calcium source (Ca) in the form of calcium nitrate and ammonium phosphate as the phosphate source (P) to obtain biphasic calcium phosphate. The prepared BCP powders and crystal structure were characterized by X-ray diffraction (XRD), Rietveld refinements and Fourier transform infrared (FT-IR) techniques. The results indicate that BCP was observed at the calcining temperature of 800 ℃ and above. Furthermore, the crystallinity of BCP increases with increasing temperature from 800-1200 ℃. The phase fraction of P-TCP is enhanced with pH of a solution from 8.6-10.6 and decrease with the temperature range of 800-1200 ℃. The formation of BCP arises from its non-stoichiometric composition of materials such as variation of synthesis parameters.
Hydroxyapatite P-tricalcium phosphate Biphasic calcium phosphate Phase transformation Eggshell
Piyapong Pankaew Ekachai Hoonnivathana Pichet Limsuwan Kittisakchai Naemchanthara
Department of Physics,Faculty of Science,King Mongkuts University of Technology Thonburi,Bangkok,10 Department of Physics,Faculty of Science,Kasetsart University,Bangkok,10900,Thailand
国际会议
the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)
三亚
英文
182-186
2011-03-25（万方平台首次上网日期，不代表论文的发表时间）