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    Lotus-leaf inspired surfaces: hydrophobicity evolution of replicas due to mechanical cleaning and mold wear

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    Gulcur_et_al_JMNM (931.6Kb)
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    Publication date
    2020-03
    Author
    Romano, J.-M.
    Garcia-Giron, A.
    Penchev, P.
    Gülçür, Mert
    Whiteside, Benjamin R.
    Dimov, S.
    Keyword
    Wear
    Abrasion
    Microtexture
    Wettability
    Micro-injection moulding
    Laser texturing
    Rights
    © 2020 ASME. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY distribution license.
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Inspired from the low wetting properties of Lotus leaves, the fabrication of dual micro/nano-scale topographies is of interest to many applications. In this research, superhydrophobic surfaces are fabricated by a process chain combining ultrashort pulsed laser texturing of steel inserts and injection moulding to produce textured polypropylene parts. This manufacturing route is very promising and could be economically viable for mass production of polymeric parts with superhydrophobic properties. However, surface damages, such as wear and abrasion phenomena, can be detrimental to the attractive wetting properties of replicated textured surfaces. Therefore, the final product lifespan is investigated by employing mechanical cleaning of textured polypropylene surfaces with multipurpose cloths following the ASTM D3450 standard. Secondly, the surface damage of replication masters after 350 injection moulding cycles with glass-fiber reinforced polypropylene, especially to intensify mould wear, was investigated. In both cases, the degradation of the dual-scale surface textures had a clear impact on surface topography of the replicas and thus on their wetting properties, too.
    URI
    http://hdl.handle.net/10454/17822
    Version
    Accepted Manuscript
    Citation
    Romano J-M, Garcia-Giron A, Penchev P et al (2020) Lotus-leaf inspired surfaces: hydrophobicity evolution of replicas due to mechanical cleaning and mold wear. Journal of Micro and Nano-Manufacturing. 8(1): 010913.
    Link to publisher’s version
    https://doi.org/10.1115/1.4046097
    Type
    Article
    Collections
    Engineering and Informatics Publications

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