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J. Korean Ceram. Soc. > Volume 51(3); 2014 > Article
Journal of the Korean Ceramic Society 2014;51(3): 145.
doi: https://doi.org/10.4191/kcers.2014.51.3.145
균일한 Hydroxyapatite Sphere 제조 및 특성분석
이강혁, 신동근, 권우택, 김형순1, 김희래2, 김영희, 김수룡
한국세라믹기술원 에너지소재센터
1인하대학교 신소재공학부
2(주)리독스바이오
Preparation and Characterization of Homogeneous Hydroxyapatite Sphere
Kang Huk Lee, Dong Geun Shin, Woo Teck Kwon, Hyungsun Kim1, Hee Rae Kim2, Younghee Kim, Soo Ryong Kim
Energy Efficient Materials Team, Korea Institute of Ceramic Engineering and Technology
1School of Materials Engineering, Inha University
2Lidox Bio Co. Ltd.
ABSTRACT
A hydroxyapatite microsphere was prepared using a spray-drying method. The change in the shape as a function of the slurry concentration and the change in the degree of shrinkage according to the heat-treatment temperatures were observed. To obtain biomaterials with improved bio-stability, $CaHPO_4{cdot}2H_2O$ and $Ca(OH)_2$ were mixed at a ratio of 6 : 4 and then ball-milled to synthesize hydroxyapatite. The hydroxyapatite microsphere was prepared using 30 wt% ~ 80 wt% hydroxyapatite slurry by a spray-drying method. For concentrations lower than 50 wt% or higher than 80 wt%, doughnut-shaped microspheres were produced. However, perfect microspheres were produced when using slurry concentrations of 50 wt% ~ 70 wt%. A dense microstructure was observed after a heat treatment at temperatures higher than $1100^{circ}C$ and the size was reduced by 24.3% at these temperatures.
Key words: Hydroxyapatite, Sphere, Spray drying, Bio stability
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