Macroporous alumina scaffolds consisting of highly microporous hollow filaments using three-dimensional ceramic/camphene-based co-extrusion

Young Wook Moon; Ik Jun Choi; Young Hag Koh; Hyoun Ee Kim

doi:10.1016/j.jeurceramsoc.2015.08.017

Macroporous alumina scaffolds consisting of highly microporous hollow filaments using three-dimensional ceramic/camphene-based co-extrusion

Young Wook Moon, Ik Jun Choi, Young Hag Koh, Hyoun Ee Kim

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

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

Original language	English
Article number	10252
Pages (from-to)	4623-4627
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	35
Issue number	16
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2015.08.017
Publication status	Published - 2015 Dec

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. NRF-2012R1A1B3003128) and the National Research Foundation of Korea (NRF) granted by the Korea government (NRF-2015R1A2A2A01007056).

Publisher Copyright:
© 2015 Elsevier Ltd.

Keywords

AlO
Biomedical applications
Extrusion
Mechanical properties
Porous ceramics

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1016/j.jeurceramsoc.2015.08.017

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title = "Macroporous alumina scaffolds consisting of highly microporous hollow filaments using three-dimensional ceramic/camphene-based co-extrusion",

abstract = "This study proposes a novel type of macroporous ceramic scaffolds, which are comprised of hollow tubular filaments with a highly microporous structure, using 3-dimensional ceramic/camphene-based co-extrusion (3D-CoEx). The use of an initial feedrod, comprised of a camphene core and an alumina/camphene shell, enabled the construction of hollow tubular frameworks and micropores through the removal of the camphene phase. The produced scaffolds showed 3-dimensionally interconnected macropores with dimensions of 250-300. μm. ×. 400-550. μm, which were surrounded by hollow alumina filaments (500. μm in diameter) featuring a number of micropores (several tens of microns in size). This unique macro/micro-porous structure could achieve a combination of both the reasonably high compressive strength of ~5.4. MPa and very high porosity of 86. vol%. In addition, the final mechanical properties and overall porosity of the porous alumina scaffolds could be fine-tuned by adjusting initial alumina content in the alumina/camphene.",

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author = "Moon, {Young Wook} and Choi, {Ik Jun} and Koh, {Young Hag} and Kim, {Hyoun Ee}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. NRF-2012R1A1B3003128) and the National Research Foundation of Korea (NRF) granted by the Korea government (NRF-2015R1A2A2A01007056). Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

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AU - Koh, Young Hag

AU - Kim, Hyoun Ee

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. NRF-2012R1A1B3003128) and the National Research Foundation of Korea (NRF) granted by the Korea government (NRF-2015R1A2A2A01007056). Publisher Copyright: © 2015 Elsevier Ltd.

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N2 - This study proposes a novel type of macroporous ceramic scaffolds, which are comprised of hollow tubular filaments with a highly microporous structure, using 3-dimensional ceramic/camphene-based co-extrusion (3D-CoEx). The use of an initial feedrod, comprised of a camphene core and an alumina/camphene shell, enabled the construction of hollow tubular frameworks and micropores through the removal of the camphene phase. The produced scaffolds showed 3-dimensionally interconnected macropores with dimensions of 250-300. μm. ×. 400-550. μm, which were surrounded by hollow alumina filaments (500. μm in diameter) featuring a number of micropores (several tens of microns in size). This unique macro/micro-porous structure could achieve a combination of both the reasonably high compressive strength of ~5.4. MPa and very high porosity of 86. vol%. In addition, the final mechanical properties and overall porosity of the porous alumina scaffolds could be fine-tuned by adjusting initial alumina content in the alumina/camphene.

AB - This study proposes a novel type of macroporous ceramic scaffolds, which are comprised of hollow tubular filaments with a highly microporous structure, using 3-dimensional ceramic/camphene-based co-extrusion (3D-CoEx). The use of an initial feedrod, comprised of a camphene core and an alumina/camphene shell, enabled the construction of hollow tubular frameworks and micropores through the removal of the camphene phase. The produced scaffolds showed 3-dimensionally interconnected macropores with dimensions of 250-300. μm. ×. 400-550. μm, which were surrounded by hollow alumina filaments (500. μm in diameter) featuring a number of micropores (several tens of microns in size). This unique macro/micro-porous structure could achieve a combination of both the reasonably high compressive strength of ~5.4. MPa and very high porosity of 86. vol%. In addition, the final mechanical properties and overall porosity of the porous alumina scaffolds could be fine-tuned by adjusting initial alumina content in the alumina/camphene.

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Macroporous alumina scaffolds consisting of highly microporous hollow filaments using three-dimensional ceramic/camphene-based co-extrusion

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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