噴霧熱分解法による水酸アパタイトの合成
1987 年 95 巻 1104 号 p. 759-763
詳細
1987 年 95 巻 1104 号 p. 759-763
Preparation of hydroxyapatite (HAP) was investigated by the spray-pyrolysis technique from methanol-water-nitric acid solution of calcium nitrate and phosphoric acid between 800° and 1400°C. The powders obtained consisted of crystalline HAP and a small amount of α-tricalcium phosphate under the experimental conditions used. The content of HAP phase in products increased as the pyrolysis temperature and/or the water content in the solution increased. One phase HAP was obtained by heating the as-prepared powders at 800°C for 1h. Spherical HAP was prepared by this method. The amount of good spherical particles in the powder products increased with increasing Pyrolysis temperature and/or with decreasing water content in the solution. Preparation of HAP with inorganic constituents similar to human bone was also examined. HAP containing Mg, Na, K, Cl and F ions was obtained and it showed good crystallinity.
