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최기평(Ki Pyeong Choi),안상현(Sang Hyun An),우창희(Chang Hee Woo),조영삼(Young-Sam Cho) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
In this article, we proposed a novel technique to fabricate cell-culturing scaffold, that is, the hollowcylinder-grain assembly technique. This technique uses hollow cylindrical particles with sub-mm thickness. Firstly, we fabricate PCL (polycaprolactone) hollow fibers with sub-mm thickness using lab-made machine and slice the fibers with a certain length. After that, we put the above-mentioned sliced particles into a metal mold of which temperature could be controlled with heating tape and controller. Sliced particles in the metal mold could be assembled together without severe collapsing under adequate temperature and time. Consequently, we could fabricate scaffold or foam structure with interconnected-porosity.
우창희(Chang Hee Woo),안상현(Sang Hyun An),최기평(Ki Pyeong Choi),조영삼(Young-Sam Cho) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
In this article, we reported the characterization of mechanical properties for several scaffolds fabricated by different techniques: bio-plotter technique, wire-network molding, and hollow-cylinder-grain assembly. Firstly, we scanned the configuration of scaffolds using micro-CT, calculated the porosities, and constructed numerical models for ABAQUS: a commercial computational analyzing program. Using ABAQUS, effective compressive and shear stiffness are calculated and compared with the experimental results from UTM tests.