| 학회 |
한국재료학회 |
| 학술대회 |
2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 |
24권 1호 |
| 발표분야 |
B. 나노화학/바이오 분과 |
| 제목 |
Porous calcium phosphate ceramic scaffolds using coextrusion-based 3D plotting technique |
| 초록 |
We herein propose a novel way for manufacturing highly porous biphasic calcium phosphate (BCP) scaffolds with tubular structure with proper mechanical properties using rapid direct deposition of dual phase initial feed rod, which are consisted of a carbon black paste core with ceramic paste as a shell. This novel technique make full use of inherent propriety of methylcellulose (MC) polymer used as the binder in aqueous system for fabricating stable initial feed rod. This allowed samples with dual pore structure both 3-dementionally fully interconnect pore and interconnected tubular BCP channel (~350m outer diameter with ~150m channel diameter). The fabricated greenbodies were sintered to burnout the binder with carbon core and densify the BCP shell which allows sintered BCP scaffold has three dimensionally fully interconnected pore structures by rapid direct deposition process and hollow tube channel obtained by carbon core as the same time. Overall porosity of fabricated sample estimated as a value of ~73.2±0.9% which were consisted of a fraction of ~24p% as interconnected pore (dimension with 300x300x120m) with fraction of ~46p% tubular BCP channel. Compressive strength also estimated as a value of ~12.3 MPa (parallel to the tube direction) and 7.1 MPa (normal to the tube direction). The biocompatibility of fabricated scaffold showed buy iv vitro cell tests. |
| 저자 |
조인환, 고영학, 이정빈, 맹우열
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| 소속 |
고려대 |
| 키워드 |
<P>3d printing; ceramics; scaffold</P>
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| E-Mail |
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