Novel additive manufacturing of photocurable ceramic slurry containing freezing vehicle as porogen for hierarchical porous structure

Jung Bin Lee, Woo Youl Maeng, Young Hag Koh, Hyoun Ee Kim

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

This paper proposes a photocurable ceramic slurry containing a freezing vehicle as a novel feedstock for digital light processing (DLP) technique, which can produce hierarchical porous ceramic structures. A thin layer, comprised of a 3-dimensionally interconnected ceramic/monomer network surrounded by a frozen camphene-camphor alloy network, can be effectively photopolymerized by the DLP process, and thus micropores can be created after the removal of the camphene-camphor network via freeze-drying. Several processing parameters for the DLP process, including the temperature of the building vat, layer thickness, and UV exposure time, were optimized to produce hierarchical porous ceramic structures. The effect of freezing vehicle content on the microporous structures (e.g., porosity and pore size) and mechanical properties of ceramic frameworks was examined. In addition, hierarchical macro/micro-porous ceramic scaffolds comprised of microporous ceramic frameworks separated by microporous CaP frameworks were produced, and their porous structures and mechanical properties were characterized.

Original languageEnglish
Pages (from-to)21321-21327
Number of pages7
JournalCeramics International
Volume45
Issue number17
DOIs
Publication statusPublished - 2019 Dec 1

Bibliographical note

Funding Information:
This work was supported by the Industrial Strategic Technology Development Program ( 10050709 , Development of core technology on organic-inorganic composites for customized 3D printing with high-resolution (<30 μm)) funded by the Ministry of Trade, Industry and Energy and Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education ( NRF-2018R1A2B6002939 ).

Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.

Keywords

  • Additive manufacturing
  • Freezing vehicle
  • Hierarchical structure
  • Photopolymerization
  • Porous ceramics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Novel additive manufacturing of photocurable ceramic slurry containing freezing vehicle as porogen for hierarchical porous structure'. Together they form a unique fingerprint.

Cite this