| 초록 |
Porous hydroxyapatite (HAp) scaffolds have been prepared by using make a comparison between HAp slurry based and the slurry including HAp and magnesia (MgO) based on the replication of polymer sponge substrate. The influence of HAp and MgO contents in slurry on the pore morphology size, porosity, density and mechanical strength of porous HAp scaffolds was investigated. The compressive strength of the scaffolds increased rapidly with the increase of MgO content at a fixed HAp content because of increasing the pore wall thickness and density of the scaffolds. As a result, the porous HAp attained a compressive strength of 0.7~1.7MPa, comparable to the high-end value 3~8MPa of porous HAp/MgO composites. The porosity, density and compressive strength of the porous HAp scaffolds prepared by the sponge method were significantly affected by the addition of MgO. |
