3D‐Printing of Functionally Graded Porous Materials Using On‐Demand Reconfigurable Microfluidics
| Autor: | Jan Guzowski, Piotr Garstecki, Andrea Barbetta, Cosima Stubenrauch, Jakub Jaroszewicz, Łukasz Kozoń, K. Szlązak, Marco Costantini, Wojciech Święszkowski |
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| Rok vydání: | 2019 |
| Předmět: |
Fabrication
Materials science microfluidics porous materials layered porous materials functionally graded materials 3D printing 010405 organic chemistry business.industry Bubble Microfluidics Nanotechnology General Chemistry 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Extrusion business Porous medium Porosity Body orifice |
| Zdroj: | Angewandte Chemie International Edition. 58:7620-7625 |
| ISSN: | 1521-3773 1433-7851 |
| Popis: | Tailoring the morphology of macroporous structures remains one of the biggest challenges in material synthesis. Herein, we present an innovative approach for the fabrication of custom macroporous materials in which pore size varies throughout the structure by up to an order of magnitude. We employed a valve-based flow-focusing junction (vFF) in which the size of the orifice can be adjusted in real-time (within tens of milliseconds) to generate foams with on-line controlled bubble size. We used the junction to fabricate layered and smoothly graded porous structures with pore size varying in the range of 80-800 μm. Additionally, we mounted the vFF on top of an extrusion printer and 3D-printed constructs characterized by a predefined 3D geometry and a controlled, spatially varying internal porous architecture, such as a model of a bone. The presented technology opens new possibilities in macroporous material synthesis with potential applications ranging from tissue engineering to aerospace industry and construction. |
| Databáze: | OpenAIRE |
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