TY - JOUR
T1 - Characterization of x-ray diffraction and electron spin resonance
T2 - Effects of sintering time and temperature on bovine hydroxyapatite
AU - Kusrini, Eny
AU - Sontang, Muhammad
N1 - Funding Information:
The authors gratefully acknowledge the support given to this work by Universitas Indonesia and the Ministry of National Education, Directorate General of Higher Education (DIKTI) for their financial support through research grant Hibah Fundamental no. 167/SP2H/PL/Dit.Litabmas/IV/2011 .
PY - 2012/2
Y1 - 2012/2
N2 - The physical and chemical properties of a hydroxyapatite produced by the sintering of bovine bone were investigated by powder x-ray diffraction (PXRD), electron spin resonance (ESR), energy dispersive x-ray spectroscopy (EDX), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and differential thermal analysis (DTA). A bovine bone powder was sintered at different temperatures ranging from 500 to 1400°C. The influences of post-irradiation storage on the radiation ESR response of the bovine bone powder before and after sintering were also studied. The results indicate that the sintered bovine bone powder contained hydroxyapatite. Diffraction patterns were sharp and clear based on the (211), (300), and (202) reflections corresponding to bovine hydroxyapatite (BHA), which confirmed the phase purity and high crystalline grade of the BHA produced. The PXRD profile of BHA was dependent on sintering temperatures and times. The molecular formula of BHA was determined by Rietveld analysis showed a similar structure and composition to calcium hydroxyapatite in hexagonal P63/m space group a=b=9.435Å and c=6.895Å. ESR data showed that the sintering process can decrease the number of free radicals in BHA; it also revealed that the number of free radicals is constant during long storage periods (75 days). The sintering technique described in this study may be used to extract hydroxyapatite from biowaste bovine bone, leading to its application as a bone filler.
AB - The physical and chemical properties of a hydroxyapatite produced by the sintering of bovine bone were investigated by powder x-ray diffraction (PXRD), electron spin resonance (ESR), energy dispersive x-ray spectroscopy (EDX), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and differential thermal analysis (DTA). A bovine bone powder was sintered at different temperatures ranging from 500 to 1400°C. The influences of post-irradiation storage on the radiation ESR response of the bovine bone powder before and after sintering were also studied. The results indicate that the sintered bovine bone powder contained hydroxyapatite. Diffraction patterns were sharp and clear based on the (211), (300), and (202) reflections corresponding to bovine hydroxyapatite (BHA), which confirmed the phase purity and high crystalline grade of the BHA produced. The PXRD profile of BHA was dependent on sintering temperatures and times. The molecular formula of BHA was determined by Rietveld analysis showed a similar structure and composition to calcium hydroxyapatite in hexagonal P63/m space group a=b=9.435Å and c=6.895Å. ESR data showed that the sintering process can decrease the number of free radicals in BHA; it also revealed that the number of free radicals is constant during long storage periods (75 days). The sintering technique described in this study may be used to extract hydroxyapatite from biowaste bovine bone, leading to its application as a bone filler.
KW - Bovine hydroxyapatite
KW - Electron spin resonance (ESR)
KW - Free radicals
KW - Rietveld analysis
KW - Sintering
UR - http://www.scopus.com/inward/record.url?scp=81255144760&partnerID=8YFLogxK
U2 - 10.1016/j.radphyschem.2011.10.006
DO - 10.1016/j.radphyschem.2011.10.006
M3 - Article
AN - SCOPUS:81255144760
SN - 0969-806X
VL - 81
SP - 118
EP - 125
JO - Radiation Physics and Chemistry
JF - Radiation Physics and Chemistry
IS - 2
ER -