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Synthesis of -tricalcium phosphate using sol-gel self-propagating combustion method |
| ZHANG Jun, GUO Jinwu, LI Suqin, SONG Bangcai, YAO Kaisheng |
| College of Chemical Engineering & Pharmaceutics, Henan University of Science & Technology |
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Abstract ?-tricalcium phosphate (?-TCP) is a key component of natural bone like hydroxyapatite. Pure and uniformly nanosized ?-tricalcium phosphate powders were synthesized using a sol-gel self-propagating combustion method by using citric acid as a reductant and using fuel and nitrate as the oxidant. The thermal decomposition of nitrate-citrate xero-gel was studied by thermogravimetric-differential thermal analysis (TG/DTA) and the process mechanism of self-propagating combustion were discussed. The resulting powders calcined at 1023, 1173 and 1273 K were characterized by Ca/P ratio analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that the as-prepared powders were pure ?-tricalcium phosphate having regular porous surface very similar to coral.
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Issue Date: 05 December 2008
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