Performance of organic nanoparticle coatings for hydrophobization of hardwood surfaces / Pieter Samyn in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 3 (05/2014)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 3 (05/2014) . - p. 461-471 Titre : Performance of organic nanoparticle coatings for hydrophobization of hardwood surfaces Type de document : texte imprimé Auteurs : Pieter Samyn, Auteur ; Dirk Stanssens, Auteur ; Angela Paredes, Auteur ; Gero Becker, Auteur Année de publication : 2014 Article en page(s) : p. 461-471 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact Bois -- Revêtements protecteurs Caractérisation Huile de palme et constituants Hydrophobie Morphologie (matériaux) Nanoparticules Rugosité Index. décimale : 667.9 Revêtements et enduits Résumé : The protection of wood surfaces against water is a primary requirement to enhance their life-time and durability. In this article, a hydrophobic surface modification of selected hardwood surfaces (including high-density (HD) and low-density (LD) samples) is presented, by coating them with waterborne imidized nanoparticles under pure conditions or with vegetable oil. The performance of both nanoparticle coatings relative to noncoated and oil-coated samples was evaluated by water contact angles, microscopy, and optical profilometry. The pure nanoparticle coatings often increase the hydrophobicity, but they do not yet form a fully protective layer due to their porous structure after drying. The nanoparticle coatings with vegetable oil form a continuous layer with a maximum contact angle of 118°. The coating formation highly depends on the wood density (and resulting surface porosity), resulting in spreading of the aqueous dispersion on HD wood and penetration on LD wood. A thin continuous nanoparticle coating with incorporated vegetable oil provides highest contact angles, as the roughness of the original wood fibers remains visible in the surface profile. Note de contenu : - EXPERIMENTAL DETAILS : Wood substrates - Nanoparticle coating and application - Characterization - RESULTS AND DISCUSSION : Contact angle measurements - Surface morphology - Surface roughness DOI : 10.1007/s11998-014-9576-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9576-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21482 [article]

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