TY - GEN
T1 - Syntheses of hydroxyapatite nanospheres through a facile sol-gel method
AU - Li, Kai
AU - Tjong, Sie Chin
PY - 2010
Y1 - 2010
N2 - Hydroxyapatite (HA) nanospheres were synthesized via the sol-gel route in the presence of poly(vinyl alcohol) (PVA). The HA nanospheres were formed from the reaction between (NH4)2HPO4and CaCl2in ethanol/PVA sol-gel system, in which ammonia solution (NH3H2O) was added to adjust the pH of solution. The as-synthesized products were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDAX). XRD patterns and FTIR spectra showed that the HA nanospheres exhibit the crystalline structure and vibration bands of HA. The Ca/P molar ratio of HA nanospheres (50∼70 nm) approached the stoichiometric value of 1.67 on the basis of ED AX results. Simulated Body Fluid (SBF) immersion test for three weeks demonstrated that the apatite layer can be formed on the HA nanospheres sintered at 550 °C. © 2010 Materials Research Society.
AB - Hydroxyapatite (HA) nanospheres were synthesized via the sol-gel route in the presence of poly(vinyl alcohol) (PVA). The HA nanospheres were formed from the reaction between (NH4)2HPO4and CaCl2in ethanol/PVA sol-gel system, in which ammonia solution (NH3H2O) was added to adjust the pH of solution. The as-synthesized products were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDAX). XRD patterns and FTIR spectra showed that the HA nanospheres exhibit the crystalline structure and vibration bands of HA. The Ca/P molar ratio of HA nanospheres (50∼70 nm) approached the stoichiometric value of 1.67 on the basis of ED AX results. Simulated Body Fluid (SBF) immersion test for three weeks demonstrated that the apatite layer can be formed on the HA nanospheres sintered at 550 °C. © 2010 Materials Research Society.
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M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781605112121
VL - 1239
SP - 99
EP - 104
BT - Materials Research Society Symposium Proceedings
PB - Materials Research Society
T2 - 2009 MRS Fall Meeting
Y2 - 1 December 2009 through 4 December 2009
ER -