TY - JOUR
T1 - Porous PVDF Monoliths with Templated Geometry
AU - Djeljadini, Suzana
AU - Bongartz, Patrick
AU - Alders, Michael
AU - Hartmann, Nils
AU - Oing, Alexander
AU - Cornelissen, Christian
AU - Hesselmann, Felix
AU - Arens, Jutta
AU - Steinseifer, Ulrich
AU - Linkhorst, John
AU - Wessling, Matthias
N1 - Funding Information:
The authors thank Karin Faensen, Dennis Linden, Felix Michael Schmitz, and Maik Tepper for supporting the experiments and scientific discussions. The current work was funded by the German Research Foundation DFG (project number 347368182). The grant is part of the priority program ”Implantable lung” DFG‐SPP 2014.
Publisher Copyright:
© 2021 The Authors. Advanced Materials Technologies published by Wiley-VCH GmbH
PY - 2021/11
Y1 - 2021/11
N2 - Additive manufacturing of complex porous polymer geometries is a new field of advanced materials processing. Such new geometries can be used to fabricate porous polymer monoliths serving as a support for other material functions. Here, a novel fabrication technology to manufacture tailored 3D porous monoliths via additive manufacturing and templating is presented. The method is based on replicating a 3D-printed mold with a polymer solution of polyvinylidenfluorid-triethyl phosphate (PVDF-TEP) and induce phase separation of the polymer solution subsequently. In a second step, the mold is removed without affecting the porous PVDF phase. As a result, porous monoliths with a templated 3D architecture are successfully fabricated. The manufacturing process is successfully applied to complex structures and can be applied to any conceivable geometry. Coating the porous 3D monoliths with another PVDF solution allows applying a skin layer yielding an asymmetric membrane monolith. As a showcase, a polydimethylsiloxane coating even leads to a smooth and dense layer of micrometer size. The methodology enables a new generation of complex porous polymer monoliths with tailored surface coatings. For the combination of poly(dimethylsiloxane) on a porous support, gas/liquid mass transfer is used in blood oxygenation with reduced diffusion limitation is within reach.
AB - Additive manufacturing of complex porous polymer geometries is a new field of advanced materials processing. Such new geometries can be used to fabricate porous polymer monoliths serving as a support for other material functions. Here, a novel fabrication technology to manufacture tailored 3D porous monoliths via additive manufacturing and templating is presented. The method is based on replicating a 3D-printed mold with a polymer solution of polyvinylidenfluorid-triethyl phosphate (PVDF-TEP) and induce phase separation of the polymer solution subsequently. In a second step, the mold is removed without affecting the porous PVDF phase. As a result, porous monoliths with a templated 3D architecture are successfully fabricated. The manufacturing process is successfully applied to complex structures and can be applied to any conceivable geometry. Coating the porous 3D monoliths with another PVDF solution allows applying a skin layer yielding an asymmetric membrane monolith. As a showcase, a polydimethylsiloxane coating even leads to a smooth and dense layer of micrometer size. The methodology enables a new generation of complex porous polymer monoliths with tailored surface coatings. For the combination of poly(dimethylsiloxane) on a porous support, gas/liquid mass transfer is used in blood oxygenation with reduced diffusion limitation is within reach.
U2 - 10.1002/admt.202100325
DO - 10.1002/admt.202100325
M3 - Article
VL - 6
JO - Advanced Materials Technologies
JF - Advanced Materials Technologies
SN - 2365-709X
IS - 11
M1 - 2100325
ER -