Design and production of continuously gradient macro/microporous calcium phosphate (CaP) scaffolds using ceramic/camphene-based 3D extrusion

Min Kyung Ahn, Young Wook Moon, Woo Youl Maeng, Young-Hag Koh, Hyoun Ee Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study proposes a new type of calcium phosphate (CaP) scaffolds with a continuously gradient macro/microporous structure using the ceramic/camphene-based 3D extrusion process. Green filaments with a continuously gradient core/shell structure were successfully produced by extruding a bilayered feedrod comprised of a CaP/camphene mixture lower part and a pure camphene upper part. The extruded filaments were then deposited in a controlled manner to construct triangular prisms, followed by the assembly process for the production of CaP scaffolds with a gradient core/shell structure. In addition, a gradient microporous structure was created by heat-treating the green body at 43 °C to induce the overgrowth of camphene dendrites in the CaP/camphene walls. The produced CaP scaffold showed a highly macroporous structure within its inner core, where the size of macrochannels increased gradually with an increase in the distance from the outer shell, while relatively larger micropores were created in the outer shell.

Original languageEnglish
Article number719
JournalMaterials
Volume10
Issue number7
DOIs
Publication statusPublished - 2017 Jun 28

Keywords

  • Additive manufacturing
  • Biomedical applications
  • Extrusion
  • Porous ceramics

ASJC Scopus subject areas

  • Materials Science(all)

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