Sonochemical synthesis of calcium phosphate powders

• Published in: Journal of materials science. Materials in medicine Vol. 18; no. 5; pp. 669 - 675
• Main Authors: de Campos, M, Müller, F A, Bressiani, A H A, Bressiani, J C, Greil, P
• Format: Journal Article
• Language: English
• Published: United States Springer Nature B.V 01.05.2007
• Subjects: Biocompatible Materials - chemical synthesis; Biocompatible Materials - chemistry; Biomedical materials; Calcium hydroxide; Calcium phosphates; Calcium Phosphates - chemical synthesis; Calcium Phosphates - chemistry; Chemical Precipitation; Glucose; Glycerol; Hot Temperature; Hydroxyapatite; Hydroxyapatites - chemical synthesis; Hydroxyapatites - chemistry; Irradiation; Materials science; Microscopy, Electron, Scanning; Neutralization; Powder Diffraction; Powders - chemical synthesis; Powders - chemistry; Precursors; Radiation; Slaked lime; Sonication; Spectroscopy, Fourier Transform Infrared; Thermal decomposition; Tricalcium phosphate
• ISSN: 0957-4530; 1573-4838
• DOI: 10.1007/s10856-006-0006-0

beta-tricalcium phosphate (beta-TCP) and biphasic calcium phosphate powders (BCP), consisting of hydroxyapatite (HA) and beta-TCP, were synthesized by thermal decomposition of precursor powders obtained from neutralization method. The precursor powders with a Ca/P molar ratio of 1.5 were prepared by adding an orthophosphoric acid (H(3)PO(4)) solution to an aqueous suspension containing calcium hydroxide (Ca(OH)(2)). Mixing was carried out by vigorous stirring and under sonochemical irradiation at 50 kHz, respectively. Glycerol and D-glucose were added to evaluate their influence on the precipitation of the resulting calcium phosphate powders. After calcination at 1000 degrees C for 3 h BCP nanopowders of various HA/beta-TCP ratio were obtained.