SYNTHESIS OF HYDROXYAPATITE BY SOL-GEL METHOD
Kazuaki HASHIMOTO, Yoshitomo TODA, Koji MIURA, Shigekazu UDAGAWA, Takafumi KANAZAWA
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1995 Volume 5 Pages 25-30
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1995 Volume 5 Pages 25-30
ydroxyapatite (HAp) was synthesized using sol-gel method in reaction of Ca-C2H4(OH)2-(C2H5O)3P-C2H5OH system. The dried gel consisting of calcium and phosphoric alcoholates was synthesized from the reaction between (C2H5O)3P in ethanol and calcium ethoxide which was prepared from the reaction between metallic Ca and C2H4(OH)2. The synthetic conditions were the starting Ca/P atomic ratio of 1.67, synthetic temperature of 25°C and aging time above 12 hours. The gel was finally changed to HAp by heating. We succeeded in synthesis of HAp with very little calcium-deficiency using this sol-gel method.
