Photocurable ceramic slurry using solid camphor as novel diluent for conventional digital light processing (DLP) process

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

doi:10.1016/j.jeurceramsoc.2019.05.069

Cited by 73 publications

(28 citation statements)

References 34 publications

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“…Complex print designs are possible but light scattering limits the resolution due to the difference in optical density between the ceramic particles and the resin. Ridges caused by line broadening effects of the UV light are often seen [66] (Figure 5D).…”

Section: 3| Macroscale: Designing the Shape And Geometrymentioning

confidence: 99%

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Bioinspired approaches to toughen calcium phosphate-based ceramics for bone repair.

Dee

You

Teoh

et al. 2020

Journal of the Mechanical Behavior of Biomedical Materials

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Highlights:• Bone has a complex multi-level hierarchical organisation. This structural organisation is key for its outstanding properties. • Artificial calcium phosphate ceramics (CPCs) are promising for achieving the set of mechanical and biological requirements for use as bone implants. • At individual lengthscales, methods have been developed to control crystal phases, microscale porosity and macroscopic geometry but the CPCs produced remain intrinsically brittle. • Inspired by the organisation of bones and other biomaterials, CPCs and their composites could have their toughness increased through multi-level hierarchical microstructures. • Challenges remain but recent advances in ceramic processing and toughening may pave the way for a new generation of medical implants.

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Section: 3| Macroscale: Designing the Shape And Geometrymentioning

confidence: 99%

“…Despite design freedom on the macroscale, the mechanical properties in 3D printed CPCs are still poor, with a low specific compressive strength and lack of toughness (Figure 7F,G). [66] with permission from Elsevier. All schematics in A-D are reproduced from ref [56] with permission from Elsevier.…”

Section: 3| Macroscale: Designing the Shape And Geometrymentioning

confidence: 99%

Bioinspired approaches to toughen calcium phosphate-based ceramics for bone repair.

Dee

You

Teoh

et al. 2020

Journal of the Mechanical Behavior of Biomedical Materials

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show abstract

“…Zeng et al [33] also prepared hydroxyapatite scaffolds with good mechanical and biocompatible properties by using the DLP method. In addition, other bioceramics, such as CaP bioceramic [34] and zirconia [35], have also been successfully prepared by using the DLP method. However, the influences of DLP conditions, including the dispersion, processing parameters, solid loading, and sintering temperature, have not been clearly completely analyzed.…”

Section: Introduction mentioning

confidence: 99%

Additive manufacturing of hydroxyapatite bioceramic scaffolds: Dispersion, digital light processing, sintering, mechanical properties, and biocompatibility

et al. 2020

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Hydroxyapatite (HA) bioceramic scaffolds were fabricated by using digital light processing (DLP) based additive manufacturing. Key issues on the HA bioceramic scaffolds, including dispersion, DLP fabrication, sintering, mechanical properties, and biocompatibility were discussed in detail. Firstly, the effects of dispersant dosage, solid loading, and sintering temperature were studied. The optimal dispersant dosage, solid loading, and sintering temperature were 2 wt%, 50 vol%, and 1250 ℃, respectively. Then, the mechanical properties and biocompatibility of the HA bioceramic scaffolds were investigated. The DLP-prepared porous HA bioceramic scaffold was found to exhibit excellent mechanical properties and degradation behavior. From this study, DLP technique shows good potential for manufacturing HA bioceramic scaffolds.

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“…The monomer 1,6-hexanediol diacrylate (HDDA) has been used in the vast majority of such work due to its low viscosity and its ability to form crosslinked organic networks 18 . HDDA has been used in association with other monomers such as ethoxylated pentaerythritol tetraacrylate (EPTA) 19,20 , polyethylene glycol diacrylate PEGDA 17 , ethoxylated pentaerythritol tetraacrylate (PPTTA) [21][22][23] , and 1,1,1-Trimethylol propane triacrylate (TMPTA) 4, 24,25 , or as a single monomer [26][27][28] . Moreover, an appropriate photoinitiator must be chosen to initiate the photopolymerization reactions, considering mainly its compatibility with the adopted monomers and the relationship between its light absorption spectrum and the wavelength emitted by the light source 29,30 .…”

Section: Introductionmentioning

confidence: 99%

3Y-TZP DLP Additive Manufacturing: Solvent-free Slurry Development and Characterization

Camargo

Erbereli

Taylor³

et al. 2021

Mat. Res.

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Vat photopolymerization (VP) stands out among ceramic additive manufacturing processes for its ability to print sub-100 micrometer complex features. One of the main challenges of this process is the preparation of a homogeneous and stable ceramic slurry with a high solid load and low viscosity. In this work, different dispersants and resins were tested, aiming to provide a solvent-free slurry suitable for DLP additive manufacturing. Disperbyk-111 and PEGDA 250 stood out in the tests, providing a 40 vol% ceramic slurry with no noticeable sedimentation and viscosity of 2.3 Pa.s at 30 s -1 despite the relatively high specific surface area (15 m 2 /g) of the 3Y-TZP powder used compared to powders usually used for VP slurries. The adsorption of Disperbyk-111 on ceramic particles surface was investigated by FTIR. Finally, ceramic bodies were 3D printed, debound and sintered at 1500 ºC for 2 h, confirming the ability to manufacture detailed dense ceramic parts.

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Photocurable ceramic slurry using solid camphor as novel diluent for conventional digital light processing (DLP) process

Cited by 73 publications

References 34 publications

Bioinspired approaches to toughen calcium phosphate-based ceramics for bone repair.

Bioinspired approaches to toughen calcium phosphate-based ceramics for bone repair.

Additive manufacturing of hydroxyapatite bioceramic scaffolds: Dispersion, digital light processing, sintering, mechanical properties, and biocompatibility

3Y-TZP DLP Additive Manufacturing: Solvent-free Slurry Development and Characterization

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