| 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. |
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| ABSTRACT |
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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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