No abstract

Porous HAp with three-dimensional network channels was prepared in a polymer foam process using a in-situ formation. HAp/polyol with various HAp solid contents was formed with an addition of isocyanate. Under all conditions, the obtained porous HAp had pore sizes ranging 50 µm to 250 µm. The influence of the HAp content on the physical and mechanical properties of porous HAp scaffolds was investigated. As the solid content increased, the porosity of the porous HAp decreased from 79.3% to 77.9%. On the other hand, the compressive strength of the porous HAp increased from 0.7 MPa to 3.7 MPa. With a HAp solid content of 15 g, the obtained porous HAp had physical properties that were more suitable for scaffolds compared to other conditions. Key words porous, HAp, scaffold, polymer, foaming 실험 방법polyol(SK Evertec Co., Ltd.)에 HAp 분말(DC Chemical co., Ltd., Chemical Pure)을 분산하고 polymer 경화제인 isocyanate를 첨가하여 HAp/urethane foam 복합 체를 제조한 후 전기로에서 burn-out과 소결 과정을 거 쳐 다공성 HAp 지지체를 제조하였다. 먼저 분말 첨가량에 따른 특성 변화를 알아보기 위하여