Macroporous alumina scaffolds consisting of highly microporous hollow filaments using three-dimensional ceramic/camphene-based co-extrusion
作者： Young-Wook Moon , Ik-Jun Choi , Young-Hag Koh , Hyoun-Ee Kim
DOI: 10.1016/J.JEURCERAMSOC.2015.08.017
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摘要: Abstract This study proposes a novel type of macroporous ceramic scaffolds, which are comprised hollow tubular filaments with highly microporous structure, using 3-dimensional ceramic/camphene-based co-extrusion (3D-CoEx). The use an initial feedrod, camphene core and alumina/camphene shell, enabled the construction frameworks micropores through removal phase. produced scaffolds showed 3-dimensionally interconnected macropores dimensions ∼250–300 μm × 400–550 μm, were surrounded by alumina (∼500 μm in diameter) featuring number (several tens microns size). unique macro/micro-porous structure could achieve combination both reasonably high compressive strength ∼5.4 MPa very porosity 86 vol%. In addition, final mechanical properties overall porous be fine-tuned adjusting content alumina/camphene.
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