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Open AccessCommunication

Electrospinning on 3D Printed Polymers for Mechanically Stabilized Filter Composites

1
Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, 25-314 Kielce, Poland
2
Faculty of Engineering and Mathematics, Bielefeld University of Applied Sciences, 33619 Bielefeld, Germany
3
Ecole Doctorale Science et Technologies, Ecole Nationale d’Ingénieurs de Sfax, Sfax 3038, Tunisia
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(12), 2034; https://doi.org/10.3390/polym11122034
Received: 31 October 2019 / Revised: 26 November 2019 / Accepted: 5 December 2019 / Published: 8 December 2019
(This article belongs to the Special Issue 3D and 4D Printing of (Bio)Materials)
Electrospinning is a frequently used method to prepare air and water filters. Electrospun nanofiber mats can have very small pores, allowing for filtering of even the smallest particles or molecules. In addition, their high surface-to-volume ratio allows for the integration of materials which may additionally treat the filtered material through photo-degradation, possess antimicrobial properties, etc., thus enhancing their applicability. However, the fine nanofiber mats are prone to mechanical damage. Possible solutions include reinforcement by embedding them in composites or gluing them onto layers that are more mechanically stable. In a previous study, we showed that it is generally possible to stabilize electrospun nanofiber mats by 3D printing rigid polymer layers onto them. Since this procedure is not technically easy and needs some experience to avoid delamination as well as damaging the nanofiber mat by the hot nozzle, here we report on the reversed technique (i.e., first 3D printing a rigid scaffold and subsequently electrospinning the nanofiber mat on top of it). We show that, although the adhesion between both materials is insufficient in the case of a common rigid printing polymer, nanofiber mats show strong adhesion to 3D printed scaffolds from thermoplastic polyurethane (TPU). This paves the way to a second approach of combining 3D printing and electrospinning in order to prepare mechanically stable filters with a nanofibrous surface. View Full-Text
Keywords: electrospinning; 3D printing; FDM printing; nanofiber mat; adhesion; water filter electrospinning; 3D printing; FDM printing; nanofiber mat; adhesion; water filter
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MDPI and ACS Style

Kozior, T.; Mamun, A.; Trabelsi, M.; Wortmann, M.; Lilia, S.; Ehrmann, A. Electrospinning on 3D Printed Polymers for Mechanically Stabilized Filter Composites. Polymers 2019, 11, 2034.

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