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Reversible switching of wetting properties and erasable patterning of polymer surfaces using plasma oxidation and thermal treatment

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    SYSNO ASEP0497613
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleReversible switching of wetting properties and erasable patterning of polymer surfaces using plasma oxidation and thermal treatment
    Author(s) Rashid, Z. (TR)
    Atay, I. (TR)
    Soydan, S. (TR)
    Yagci, Y. (TR)
    Jonáš, Alexandr (UPT-D) RID, SAI, ORCID
    Yilgor, E. (TR)
    Kiraz, A. (TR)
    Yilgor, I. (TR)
    Number of authors8
    Source TitleApplied Surface Science. - : Elsevier - ISSN 0169-4332
    Roč. 441, MAY (2018), s. 841-852
    Number of pages12 s.
    Publication formPrint - P
    Languageeng - English
    CountryNL - Netherlands
    Keywordsreversible wetting ; plasma oxidation ; superhydrophobic ; superhydrophilic
    Subject RIVBH - Optics, Masers, Lasers
    OECD categoryCoating and films
    Institutional supportUPT-D - RVO:68081731
    UT WOS000427816400099
    EID SCOPUS85042120620
    DOI10.1016/j.apsusc.2018.02.089
    AnnotationPolymer surfaces reversibly switchable from superhydrophobic to superhydrophilic by exposure to oxygen plasma and subsequent thermal treatment are demonstrated. Two inherently different polymers, hydrophobic segmented polydimethylsiloxane-urea copolymer (TPSC) and hydrophilic poly(methyl methacrylate) (PMMA) are modified with fumed silica nanoparticles to prepare superhydrophobic surfaces with roughness on nanometer to micrometer scale. Smooth TPSC and PMMA surfaces are also used as control samples. Regardless of their chemical structure and surface topography, all surfaces display completely reversible wetting behavior changing from hydrophobic to hydrophilic and back for many cycles upon plasma oxidation followed by thermal annealing. Influence of plasma power, plasma exposure time, annealing temperature and annealing time on the wetting behavior of polymeric surfaces are investigated. Surface compositions, textures and topographies are characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and white light interferometry (WLI), before and after oxidation and thermal annealing. Wetting properties of the surfaces are determined by measuring their static, advancing and receding water contact angle. We conclude that the chemical structure and surface topography of the polymers play a relatively minor role in reversible wetting behavior, where the essential factors are surface oxidation and migration of polymer molecules to the surface upon thermal annealing. Reconfigurable water channels on polymer surfaces are produced by plasma treatment using a mask and thermal annealing cycles. Such patterned reconfigurable hydrophilic regions can find use in surface microfluidics and optofluidics applications.
    WorkplaceInstitute of Scientific Instruments
    ContactMartina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
    Year of Publishing2019
Number of the records: 1  

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