Photocurable ceramic/monomer feedstocks containing terpene crystals as sublimable porogen for UV curing-assisted 3D plotting

Woo Youl Maeng, Jong Won Jeon, Jung Bin Lee, Hyun Lee, Young Hag Koh, Hyoun Ee Kim

Research output: Contribution to journalArticle

Abstract

This study presents a novel strategy to construct ceramic structures comprised of microporous filaments using photocurable ceramic/monomer feedstocks containing terpene crystals as sublimable porogens for UV curing-assisted 3D plotting technique. The biphasic calcium phosphate (BCP) feedstock, composed of frozen terpene crystals surrounded by BCP/UDMA walls, could be favorably extruded through a fine nozzle and then effectively photopolymerized by UV light. Thus, green filaments with high shape retention could be obtained. In addition, a number of pores could be created in BCP filaments after removing terpene crystals via freeze-drying and the porosity could be tailored by adjusting terpene content in BCP feedstocks. This approach allowed for the construction of dual-scale porous structures comprising microporous filaments in a periodic pattern, with tailored overall porosities and compressive strengths. Several types of self-supporting structures were also successfully constructed using our approach.

Original languageEnglish
Pages (from-to)3469-3477
Number of pages9
JournalJournal of the European Ceramic Society
Volume40
Issue number9
DOIs
Publication statusPublished - 2020 Aug

Keywords

  • Additive manufacturing
  • Hierarchical porous ceramic
  • Microporous filament
  • Photopolymerization
  • Porogen

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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