P15 超音波を用いた転移による水酸アパタイトの合成(ポスター発表)

概要

論文の詳細を見る
It is well known that dicalcium phosphate dihydrate (DCPD) is slowly transferred to hydroxyapatite (HAp) in water. It was found that the transition was promoted by irradiating the ultrasound in the water. This paper reports that transition from DCPD to HAp by ultrasound irradiation in the suspension. DCPD was synthesized by in CaCl_2-Na_2HPO_4-H_2O system reaction, while the ultrasound was irradiated. The frequency of ultrasound was 20 kHz. The temperature of DCPD suspension rose to 80 ℃ by irradiating ultrasound for 15 minutes. This time, DCPD was transferred with the temperature rise to HAp. The formation rate of HAp was speeder than stirring. It was indicated that formed HAp was Ca^<2+>-deficient HAp by measurement of infrared spectra. The Eu/Ca atomic ratio of formed Ca^<2+>-deficient HAp was 1.42 from the result of ICP. By scanning electron microscopy observation, HAp formed by irradiating ultrasound for 15 minutes was length 50nm × width 30 nm.
日本ソノケミストリー学会の論文
2010-10-21