| 학회 | 한국재료학회 |
| 학술대회 | 2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 | 20권 1호 |
| 발표분야 | D. 바이오 재료(Biomaterials) |
| 제목 | 3-Dimensional Solid Freeform Fabrication Techniques for Producing Porous Bio-ceramic Scaffolds for Tissue Regeneration |
| 초록 | RDD method is most promising technique for fabricating 3D scaffolds which have proper fully interconnected pore structure. Using RDD system, porous BCP scaffolds are constructed directly with BCP paste. Dominant parameters of RDD system are viscosity of paste for extrusion, extrusion nozzle diameter, extrusion pressure, deposition velocity and scaffold design. Viscosity of the paste is controlled by adjusting the paste composition, for example, powder concentration, kinds and amount of polymeric binder and added dispersant. Diameter of extruded filament is strongly determined by extrusion nozzle diameter. Extrusion pressure and deposition speed are controlled by adjusting RDD robot controller, these factors are contribute to deposition rate. Scaffold design is also an important factor which is a very important factor to influence the properties of the final form. In this technique, laminating of lattice architectures with 90◦ angular discrepancy repeatedly for achieving porous BCP ceramic scaffolds with fully interconnected pore structure by using a well-designed 3D-rapid direct deposition machine. BCP filaments are able to assemble up by setting Z-axis movement of the motion controller by adjusting Z-axis motion controller which are the part of RDD machine using BCP/methyl cellulous paste. By controlling X-Y-Z axis movement by RDD robot motion controller, two patterns of BCP lattice architecture were designed and constructed by 3D-RDD robot controller with 90◦ angular discrepancy. Laminating of lattice architectures with 90◦ angular discrepancy repeatedly for achieving porous BCP ceramic scaffolds with fully interconnected pore structure. |
| 저자 | In-Hwan Jo1, Young-Wook Moon2, Min-Kyung Ahn3, Young-Hag Koh4 |
| 소속 | 1Department of Bio-convergence Engineering, 2Korea Univ., 3Seoul, 4Korea |
| 키워드 | 3D printing; Rapid Direct Deposition; 3D scaffolds; Calcium phosphate; Solvent extraction |
