Environmentally-harmless polylactic acid-polyethylene glycol binder for deformable ceramic green body
- Authors
- Choi, Junghyun; Kim, Patrick Joo Hyun; Seo, Jihoon; Kwon, Jiseok; Lee, Sangkyu; Song, Taeseup
- Issue Date
- Mar-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Green body; Binder; Environmental-harmless; Polylactic acid; 3D printing
- Citation
- CERAMICS INTERNATIONAL, v.44, no.4, pp.4220 - 4224
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 44
- Number
- 4
- Start Page
- 4220
- End Page
- 4224
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3923
- DOI
- 10.1016/j.ceramint.2017.12.001
- ISSN
- 0272-8842
- Abstract
- We report a polylactic acid (PLA)-polyethylene glycol (PEG) mixture as a thermoplastic binder to prepare shape-machinable ceramic green bodies. During the mixing process, the high viscosity of the PLA binder impedes effective mixing with ceramic powders. To address this issue, PEG was introduced as a plasticizer into ceramic/PLA composites to diminish the overall viscosity of the feedstock, which resulted in effective mixing with ceramic powders. After sintering green bodies composed of PLA-PEG binders and ceramic compounds, the mechanical properties (flexural strength and porosity) of the sintered specimens were investigated and compared with those of sintered specimens made from wax-based green bodies. The sintered specimens made from ceramic/PLA-PEG composites showed comparable mechanical properties and porosities with the sintered specimens made from ceramic/wax composites. In addition, the shape-machinable characteristic of the green bodies made from ceramic/PLA-PEG composites was demonstrated by deforming the entire structure of the green bodies via simple heat treatment.
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