Počet záznamů: 1
Reversible switching of wetting properties and erasable patterning of polymer surfaces using plasma oxidation and thermal treatment
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SYSNO ASEP 0497613 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Reversible switching of wetting properties and erasable patterning of polymer surfaces using plasma oxidation and thermal treatment Tvůrce(i) 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)Celkový počet autorů 8 Zdroj.dok. Applied Surface Science. - : Elsevier - ISSN 0169-4332
Roč. 441, MAY (2018), s. 841-852Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova reversible wetting ; plasma oxidation ; superhydrophobic ; superhydrophilic Vědní obor RIV BH - Optika, masery a lasery Obor OECD Coating and films Institucionální podpora UPT-D - RVO:68081731 UT WOS 000427816400099 EID SCOPUS 85042120620 DOI 10.1016/j.apsusc.2018.02.089 Anotace Polymer 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. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2019
Počet záznamů: 1