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Roll-to-roll fabrication of superhydrophobic pads covered with nanofur for the efficient clean-up of oil spills

Weiser, Patrick 1; Kietz, Robin 1; Schneider, Marc 1; Worgull, Matthias 1; Hölscher, Hendrik ORCID iD icon 1
1 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)


Superhydrophobic surfaces, which self-clean through rinsing with water, have gained significant importance during the last decades. A method to fabricate such a surface featuring the lotus effect, solely through structuring, is hot pulling of a polymer surface. This technique provides the so-called nanofur, which consists of a polymer surface densely covered with a polymeric fur of extremely thin hair-like structures. Here, we present a continuous roll-to-roll process for the fabrication of a thin polymeric film covered with nanofur from polypropylene. Our process enables structuring of large areas of the order of square meters using industry standard machinery. This opens up many possible applications for nanofur that could previously not be realized because of the limitations of conventional hot embossing regarding structurable area. The structured film is subsequently processed into an exemplary product, that is, so-called nanopads; polymeric sandwiches of polypropylene film covered with nanofur and filled with an oil-absorbing material. These are well-suited for the cleanup of small oil spills.

DOI: 10.3762/bjnano.13.102
Zitationen: 1
Zitationen: 1
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2190-4286
KITopen-ID: 1000152899
HGF-Programm 38.01.04 (POF IV, LK 01) Modules, Stability, Performance and Specific Applications
Erschienen in Beilstein Journal of Nanotechnology
Verlag Beilstein-Institut
Band 13
Seiten 1228–1239
Vorab online veröffentlicht am 31.10.2022
Schlagwörter hot embossing, lotus effect, nanofur, nanopads, oil spill cleanup, oil water separation, roll-to-roll, R2R, superhydrophobicity
Nachgewiesen in Dimensions
Web of Science
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