Improving hydrophobicity on polyurethane-based synthetic leather through plasma polymerization for easy care effect / Burcak Karaguzel Kayaoglu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 4 (07/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 4 (07/2013) . - p. 549-588 Titre : Improving hydrophobicity on polyurethane-based synthetic leather through plasma polymerization for easy care effect Type de document : texte imprimé Auteurs : Burcak Karaguzel Kayaoglu, Auteur ; Emre Ozturk, Auteur ; F. Seniha Güner, Auteur ; Tamer Uyar, Auteur Année de publication : 2013 Article en page(s) : p. 549-588 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact Cuir synthétique Hydrophobie Polymérisation sous plasma Polyuréthanes Surfaces -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : This study reports on the deposition of a hydrophobic coating on polyurethane (PU)-based synthetic leather through a plasma polymerization method and investigates the hydrophobic behavior of the plasma-coated substrate. The silicon compound of hexamethyldisiloxane (HMDSO), inactive gas argon (Ar), and toluene were used to impart surface hydrophobicity to a PU-based substrate. Surface hydrophobicity was analyzed by water contact angle measurements. Surface hydrophobicity was increased by deposition of compositions of 100% HMDSO, 3:1 HMDSO/toluene, and 1:1 HMDSO/toluene. Optimum conditions of 40 W, 30 s plasma treatment resulted in essentially the same initial contact angle results of approximately 100° for all three treatment compositions. The initial water contact angle for untreated material was about 73°. A water droplet took 1800 s to spread out on the plasma-treated sample after it had been placed on the sample surface. An increase in plasma power also led to a decrease in contact angle, which may be attributed to oxidization of HMDSO during plasma deposition. XPS analysis showed that plasma polymerization of HMDSO/toluene compositions led to a significant increase in atomic percentage of Si compound responsible for the hydrophobic surface. The easy clean results for the treated and untreated PU-based synthetic leather samples clearly showed that the remaining stain on the plasma-polymerized sample was less than that of untreated sample. The plasma-formed coating was both hydrophobic and formed a physical barrier against water and stain. Note de contenu : - EXPERIMENTAL : Plasma treatment - Contact angle measurements - Easy clean property - Scanning electron microscopy (SEM) - X-ray photoelectron spectroscopy (XPS) - RESULTS AND DISCUSSION : Water contact angle measurements - Surface roughness - X-ray photoelectron spectroscopy (XPS) DOI : 10.1007/s11998-013-9470-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9470-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19104 [article]

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