3D-Printing of Functionally Graded Porous Materials Using On-Demand Reconfigurable Microfluidics

被引:91
作者
Costantini, Marco [1 ,2 ,3 ]
Jaroszewicz, Jakub [2 ]
Kozon, Lukasz [1 ]
Szlazak, Karol [2 ]
Swieszkowski, Wojciech [2 ]
Garstecki, Piotr [1 ]
Stubenrauch, Cosima [4 ]
Barbetta, Andrea [3 ]
Guzowski, Jan [1 ]
机构
[1] Polish Acad Sci, Inst Phys Chem, Ul Kasprzaka 44-52, PL-01224 Warsaw, Poland
[2] Warsaw Univ Technol, Fac Mat Sci & Engn, Ul Woloska 141, PL-02507 Warsaw, Poland
[3] Univ Roma La Sapienza, Dept Chem, Ple Aldo Moro 5, I-00185 Rome, Italy
[4] Univ Stuttgart, Inst Phys Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
关键词
3D printing; functionally graded materials; layered porous materials; microfluidics; FOAMS; FLOW;
D O I
10.1002/anie.201900530
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 mu m. 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.
引用
收藏
页码:7620 / 7625
页数:6
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