Temporal variations of surface roughness and thickness of polymer-coated quartz sand / Yunesh Saulick in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 5 (09/2023) . - p. 1795-1800 Titre : Temporal variations of surface roughness and thickness of polymer-coated quartz sand Type de document : texte imprimé Auteurs : Yunesh Saulick, Auteur ; Hong-Wei Yang, Auteur ; Sergio D. N. Lourenço, Auteur Année de publication : 2023 Article en page(s) : p. 1795-1800 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Hydrophobie Interférométrie Matériaux -- Epaisseur Mesure Particules (matières) Quartz Revêtements organiques Rugosité Silanes Surfaces (Physique) Index. décimale : 667.9 Revêtements et enduits Résumé : In this work, the changes in surface roughness and thickness of particles have been investigated after coating with polymers that result in hydrophobicity after a given time period. The study fundamentally investigates the evolution of these surface properties from the instant the particles are coated. Six chemical agents have been used on near-spherical glass beads and the changes in surface profiles monitored. Surface roughness was quantified using the power spectral density method and the surface thickness of the coatings was determined by a new technique which involved calculating the change in the representative radius of asperity. Results showed that the coating process altered the surface roughness and thickness of particles irrespective of chemicals used. The time-dependency of the coating process is illustrated and it was observed that fluctuations in both surface roughness and thickness lessened after a time period of 30 min. Depending on the chemical agent used, either an overall roughening or softening was recorded at 60 min and the values of surface thickness showed increases between 71 and 256 nm. By analyzing the evolution of surface roughness and thickness at the particle level following coating, this study demonstrated the intricate link between surface properties and chemistry in inducing functional properties on particles. Note de contenu : - MATERIALS AND METHODS : Materials - Coating process and surface measurements - Surface roughness - Surface thickness - RESULTS AND DISCUSSION : Temporal variations of surface roughness - Temporal variations of surface thickness - Table 1 : Properties of chemical agents DOI : https://doi.org/10.1007/s11998-023-00798-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00798-z.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39989 [article]

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