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 language | English |
|---|---|
| Pages (from-to) | 3469-3477 |
| Number of pages | 9 |
| Journal | Journal of the European Ceramic Society |
| Volume | 40 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 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