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Evaluation of atmospheric-pressure plasma parameters to achieve superhydrophobic and self-cleaning HTV silicone rubber surfaces via a single-step, eco-friendly approach

Vazirinasab Elham, Jafari Reza et Momen Gelareh. (2019). Evaluation of atmospheric-pressure plasma parameters to achieve superhydrophobic and self-cleaning HTV silicone rubber surfaces via a single-step, eco-friendly approach. Surface and Coatings Technology, 375, p. 100-111.

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URL officielle: http://dx.doi.org/doi:10.1016/j.surfcoat.2019.07.0...

Résumé

Effective self-cleaning and superhydrophobic surfaces having superb water repellency are among the most widespread alternatives for eliminating surface contamination, corrosion resistance, reducing ice accumulation, etc. to enhance the life-span of various engineered materials. In this study, we developed a simple methodology, based on an atmospheric-pressure air plasma system, as a simple, environmentally friendly and industry applicable approach for fabricating superhydrophobic surfaces. Our approach is significant as the use of an atmospheric-pressure plasma system combined with compressed air as an eco-friendly plasma gas offers great potential for the industrialization of superhydrophobic surfaces for mass production. The creation of micro- and nano-structured surface roughness on a low surface energy high temperature vulcanized (HTV) silicone rubber substrate resulted in a static water contact angle (WCA) > 160° and a contact angle hysteresis (CAH) < 3°. Scanning electron microscopy (SEM) revealed the presence of the plasma-induced coral-like micro- and nano-structures responsible for the superhydrophobicity of the surfaces. We assessed the influence of plasma operating parameters on the water repellency of silicone rubber via a design of experiment (DoE) method to determine the near-optimal operating parameters; once established, we could assess the characteristics of the surfaces. In addition to the superhydrophobic surfaces, we also fabricated another surface, named a slippery hydrophobic surface, under specific plasma operating conditions. Superhydrophobic surfaces prepared at these optimal plasma operating conditions showed favorable water repellency and self-cleaning properties under both wet and dry conditions.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:375
Pages:p. 100-111
Version évaluée par les pairs:Oui
Date:15 Octobre 2019
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:superhydrophobic, plasma operating parameters, response surface method, atmospheric-pressure plasma, HTV silicone rubber, self-cleaning, superhydrophobe, paramètres de fonctionnement du plasma, méthode de surface de réponse, plasma à pression atmosphérique, caoutchouc de silicone HTV, autonettoyant
Déposé le:16 juin 2021 15:17
Dernière modification:16 juin 2021 15:17
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