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 journalArticlepeer-review

    17 Citations (Scopus)

    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

    Bibliographical note

    Funding Information:
    This research was funded by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2018R1A2B6002939 ).

    Publisher Copyright:
    © 2020 Elsevier Ltd

    Keywords

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

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

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