TY - GEN
T1 - Synthesis and characterization of fluorine-substituted hydroxyapatite powder by polyacrylamide-gel method
AU - Luo, Yan
AU - Li, Wenxu
AU - Wang, Fuping
AU - Zou, Jing
PY - 2011
Y1 - 2011
N2 - Fluor-hydroxyapatite (FHA) powder was synthesized using polyacrylamide gel method with Ca(NO3)2.4H2O as raw material of calcium, (NH4)2HPO4 as raw material of phosphor, and different amounts of ammonium fluoride (NH4F) acting as fluorine source. XRD and FT-IR results showed that, the F- enter the crystal lattice of hydroxyapatite and substitute for some of the OH -, and result in the change of the symmetry of crystal structure. As the fluorine addition was increased, the α-axis of the apatite decreased gradually while the c-axis does not obviously changed, and the content of the β-TCP decreased gradually. So addition of fluorine ions effectively suppresses the decomposition and enhances the thermal stability of pure HA. The lattice parameter has a good liner relationship with fluorine content: a = -1.29×10-3 x + 0.94063; c = 4.3×10-4 x + 0.68772(R2≥0.95). But addition of F- has no effects on microstructure of HA, and fluorine-substituted hydroxyapatite remains hexagonal morphology.
AB - Fluor-hydroxyapatite (FHA) powder was synthesized using polyacrylamide gel method with Ca(NO3)2.4H2O as raw material of calcium, (NH4)2HPO4 as raw material of phosphor, and different amounts of ammonium fluoride (NH4F) acting as fluorine source. XRD and FT-IR results showed that, the F- enter the crystal lattice of hydroxyapatite and substitute for some of the OH -, and result in the change of the symmetry of crystal structure. As the fluorine addition was increased, the α-axis of the apatite decreased gradually while the c-axis does not obviously changed, and the content of the β-TCP decreased gradually. So addition of fluorine ions effectively suppresses the decomposition and enhances the thermal stability of pure HA. The lattice parameter has a good liner relationship with fluorine content: a = -1.29×10-3 x + 0.94063; c = 4.3×10-4 x + 0.68772(R2≥0.95). But addition of F- has no effects on microstructure of HA, and fluorine-substituted hydroxyapatite remains hexagonal morphology.
KW - Fluor-hydroxyapatite (FHA)
KW - Lattice Parameters
KW - Polyacrylamide-gel Method
KW - Thermal Stability
UR - https://www.scopus.com/pages/publications/78650949070
U2 - 10.4028/www.scientific.net/AMR.152-153.1305
DO - 10.4028/www.scientific.net/AMR.152-153.1305
M3 - 会议稿件
AN - SCOPUS:78650949070
SN - 9780878492039
T3 - Advanced Materials Research
SP - 1305
EP - 1308
BT - New Materials and Advanced Materials
T2 - 2010 International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2010
Y2 - 6 November 2010 through 8 November 2010
ER -