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Article

3D Printing of Hierarchically Porous Lattice Structures Based on Åkermanite Glass Microspheres and Reactive Silicone Binder

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Centre for Functional and Surface-Functionalized Glass, Alexander Dubček University of Trenčín, 911 50 Trenčín, Slovakia
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Department of Industrial Engineering, Università degli Studi di Padova, 35131 Padova, Italy
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Department of Civil, Environmental and Architectural Engineering (ICEA), University of Padova, 35131 Padova, Italy
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Refractories, Ceramics and Building Materials Department, National Research Centre, El Buhouth Str., Cairo 12622, Egypt
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Joint Glass Centre of the IIC SAS, TnUAD, and FChFT STU, FunGlass, Alexander Dubček University of Trenčín, 911 50 Trenčín, Slovakia
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Authors to whom correspondence should be addressed.
Academic Editors: Anişoara Cîmpean, Florin Miculescu and Ibrahim Tarik Ozbolat
J. Funct. Biomater. 2022, 13(1), 8; https://doi.org/10.3390/jfb13010008
Received: 13 December 2021 / Revised: 7 January 2022 / Accepted: 11 January 2022 / Published: 13 January 2022
(This article belongs to the Special Issue Bioceramics and Bioactive Glass-Based Materials)
The present study illustrates the manufacturing method of hierarchically porous 3D scaffolds based on åkermanite as a promising bioceramic for stereolithography. The macroporosity was designed by implementing 3D models corresponding to different lattice structures (cubic, diamond, Kelvin, and Kagome). To obtain micro-scale porosity, flame synthesized glass microbeads with 10 wt% of silicone resins were utilized to fabricate green scaffolds, later converted into targeted bioceramic phase by firing at 1100 °C in air. No chemical reaction between the glass microspheres, crystallizing into åkermanite, and silica deriving from silicone oxidation was observed upon heat treatment. Silica acted as a binder between the adjacent microspheres, enhancing the creation of microporosity, as documented by XRD, and SEM coupled with EDX analysis. The formation of ‘spongy’ struts was confirmed by infiltration with Rhodamine B solution. The compressive strength of the sintered porous scaffolds was up to 0.7 MPa with the porosity of 68–84%. View Full-Text
Keywords: bioceramics; åkermanite; glass microspheres; additive manufacturing; silicones bioceramics; åkermanite; glass microspheres; additive manufacturing; silicones
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MDPI and ACS Style

Dasan, A.; Kraxner, J.; Grigolato, L.; Savio, G.; Elsayed, H.; Galusek, D.; Bernardo, E. 3D Printing of Hierarchically Porous Lattice Structures Based on Åkermanite Glass Microspheres and Reactive Silicone Binder. J. Funct. Biomater. 2022, 13, 8. https://doi.org/10.3390/jfb13010008

AMA Style

Dasan A, Kraxner J, Grigolato L, Savio G, Elsayed H, Galusek D, Bernardo E. 3D Printing of Hierarchically Porous Lattice Structures Based on Åkermanite Glass Microspheres and Reactive Silicone Binder. Journal of Functional Biomaterials. 2022; 13(1):8. https://doi.org/10.3390/jfb13010008

Chicago/Turabian Style

Dasan, Arish, Jozef Kraxner, Luca Grigolato, Gianpaolo Savio, Hamada Elsayed, Dušan Galusek, and Enrico Bernardo. 2022. "3D Printing of Hierarchically Porous Lattice Structures Based on Åkermanite Glass Microspheres and Reactive Silicone Binder" Journal of Functional Biomaterials 13, no. 1: 8. https://doi.org/10.3390/jfb13010008

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