Hybrid inks for 3D printing of tall BaTiO3-based ceramics

Gadea, Christophe; Spelta, Tarek; Simonsen, Søren Bredmose; Esposito, Vincenzo; Bowen, Jacob R.; Haugen, Astri Bjørnetun

doi:10.1016/j.oceram.2021.100110

Cited by 6 publications

(6 citation statements)

References 41 publications

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“…Herschel‐Bulkley model is a guide to assess the rheological behavior of ceramic inks used in DIW 27,28 . Equation (3) represents this model, where

τ

and

γ

are the shear stress and shear rate applied during the printing process, respectively 28 .…”

Section: Resultsmentioning

confidence: 99%

“…The ink rheology played a major role in the scaffold final structure. Presenting a good shear thinning behavior (Figure 1 A), the ink only starts to flow after reaching certain yield stress and that causes a decrease in viscosity until the stress is released 27 . At that moment, the viscosity is increased and it guarantees the maintenance of the scaffold's shape 27,33 .…”

Section: Discussionmentioning

confidence: 99%

“…Presenting a good shear thinning behavior (Figure 1 A), the ink only starts to flow after reaching certain yield stress and that causes a decrease in viscosity until the stress is released 27 . At that moment, the viscosity is increased and it guarantees the maintenance of the scaffold's shape 27,33 . As the requirements from Peng and colleagues 28 have been reached, it can be concluded that the solid content, the mixture process, and the gel concentration were suitable for ink development for DIW.…”

Section: Discussionmentioning

confidence: 99%

“…1 A), the ink only starts to flow after reaching certain yield stress and that causes a decrease in viscosity until the stress is released. 27 At that moment, the viscosity is increased and it guarantees the maintenance of the scaffold's shape. 27,33 As the requirements from Peng and colleagues 28 have been reached, it can be concluded The relation between G' and G" is determined by the polymer microstructural network and the ink's viscoelastic properties.…”

Section: Scaffolds In Vitro Cytocompatibility With Mg-63 Cellsmentioning

confidence: 99%

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3D‐printed β‐TCP/S53P4 bioactive glass scaffolds coated with tea tree oil: Coating optimization, in vitro bioactivity and antibacterial properties

et al. 2022

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Bone infection treatment is a significant challenge for the orthopedic field. 3D printing is a promising technology to produce scaffolds with customized architecture, able to stimulate and support bone growth. β-TCP and S53P4 bioactive glass (BG) are well-known biomaterials for scaffold manufacturing. However, a multifunctional scaffold, able to inhibit microbial proliferation at the defect site, is of increasing interest to avoid infection recurrence. Tea tree oil (TTO) has aroused interest as an antimicrobial agent to minimize the use of antibiotics. Therefore, combining the regenerative potential of a bioceramic with TTO's antimicrobial properties could result in a scaffold capable of stimulating tissue growth and treating infections. In this context, this study aimed to produce and characterize 3D-printed β-TCP/S53P4 BG scaffolds coated with TTO. Scaffolds morphological and chemical characterizations were carried out through XDR, SEM, and FTIR analysis. β-TCP/S53P4 BG scaffolds showed a compressive strength of $2 MPa and 53 ± 2% of porosity. The scaffolds were coated by two different procedures, using an ethanol/TTO (EtOH/TTO) and a gelatin/TTO (Gel/TTO) solution with 5, 10, and 15% (v/v) TTO. The addition of TTO decreased MG-63 cell viability for both coating groups, but the Gel/TTO group showed higher cell viability. The antibacterial activity of the coated scaffolds was evaluated against S. aureus and higher inhibition of colony formation was found for Gel/TTO group.Therefore, the coating with Gel/TTO was effective in terms of antibacterial activity and cell viability. Such Gel/TTO coated β-TCP/S53P4 BG scaffolds are proposed for antibacterial bone tissue engineering.

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“…Herschel‐Bulkley model is a guide to assess the rheological behavior of ceramic inks used in DIW 27,28 . Equation (3) represents this model, where

τ

and

γ

are the shear stress and shear rate applied during the printing process, respectively 28 .…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Scaffolds In Vitro Cytocompatibility With Mg-63 Cellsmentioning

confidence: 99%

See 2 more Smart Citations

3D‐printed β‐TCP/S53P4 bioactive glass scaffolds coated with tea tree oil: Coating optimization, in vitro bioactivity and antibacterial properties

et al. 2022

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“…A broad overview of additive-manufactured piezoelectric ceramics is given by Chen et al According to this review, BT and BT-based ceramics have already been investigated using AM techniques such as stereolithography, − binder jetting, , extrusion-free forming, fused deposition modeling, , selective laser sintering, electrical poling-assisted additive manufacturing, or solvent evaporation-assisted 3D printing . Only a few studies deal with the extrusion or DIW of BT, and only a small fraction of those investigate the production of 3D-printed ceramic bodies. ,− …”

Section: Introductionmentioning

confidence: 99%

Giant Functional Properties in Porous Electroceramics through Additive Manufacturing of Capillary Suspensions

Menne

Silva

Rotan

et al. 2022

ACS Appl. Mater. Interfaces

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Dedicated hierarchical structuring of functional ceramics can be used to shift the limits of functionality. This work presents the manufacturing of highly open porous, hierarchically structured barium titanate ceramics with 3-3 connectivity via direct ink writing of capillary suspension-type inks. The pore size of the printed struts (∼1 μm) is combined with a printed mesostructure (∼100 μm). The self-organized particle network, driven by strong capillary forces in the ternary solid/fluid/fluid ink, results in a high strut porosity, and the distinct flow properties of the ink allow for printing high strut size to pore size ratios, resulting in total porosities >60%. These unique and highly porous additive manufactured log-pile structures with closed bottom and top layers enable tailored dielectric and electromechanical coupling, resulting in an energy harvesting figure of merit FOM33 more than four times higher than any documented data for barium titanate. This clearly demonstrates that combining additive manufacturing of capillary suspensions in combination with appropriate sintering allows for creation of complex architected 3D structures with unprecedented properties. This opens up opportunities in a broad variety of applications, including electromechanical energy harvesting, electrode materials for batteries or fuel cells, thermoelectrics, or bone tissue engineering with piezoelectrically stimulated cell growth.

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Controllable preparation of two-dimensional oriented BaTiO3 polycrystals from K0.8Ti1.73Li0.27O4 crystals by a one-step solvothermal process

Yao

Yang

et al. 2022

Ceramics International

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Hybrid inks for 3D printing of tall BaTiO3-based ceramics

Cited by 6 publications

References 41 publications

3D‐printed β‐TCP/S53P4 bioactive glass scaffolds coated with tea tree oil: Coating optimization, in vitro bioactivity and antibacterial properties

3D‐printed β‐TCP/S53P4 bioactive glass scaffolds coated with tea tree oil: Coating optimization, in vitro bioactivity and antibacterial properties

Giant Functional Properties in Porous Electroceramics through Additive Manufacturing of Capillary Suspensions

Controllable preparation of two-dimensional oriented BaTiO3 polycrystals from K0.8Ti1.73Li0.27O4 crystals by a one-step solvothermal process

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