Application of polymer nanoparticle coating for tuning the hydrophobicity of cellulosic substrates / Pieter Samyn in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 3 (05/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 3 (05/2011) . - p. 363-373 Titre : Application of polymer nanoparticle coating for tuning the hydrophobicity of cellulosic substrates Type de document : texte imprimé Auteurs : Pieter Samyn, Auteur ; G. Schoukens, Auteur ; H. Van den Abbeele, Auteur ; L. Vonck, Auteur ; Dirk Stanssens, Auteur Année de publication : 2011 Article en page(s) : p. 363-373 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Hydrophobie Mouillage (chimie des surfaces) Nanoparticules Papier Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Nanoparticles of partially imidized poly(styrene–maleic anhydride) were applied from an aqueous dispersion as a one- or two-layer coating onto paper substrates, for controlling the paper surface hydrophobicity and improving the water barrier resistance. The effect of deposition conditions and thermal treatments on the topography and properties of the coating was studied by scanning electron microscopy, atomic force microscopy (AFM), contact angle measurements, and friction measurements. The wettability of paper surfaces with adsorbed nanoparticles can be controlled by tuning the chemical and topographical surface parameters: the water contact angles were found to increase at higher imide content as determined by Raman spectroscopy (depending on synthesis and thermal treatment), and higher average surface roughness determined by AFM (depending on the deposition method). The present technique may serve as a unique replacement for chemical treatments hydrophobizing fibrous substrates. Note de contenu : - EXPERIMENTAL DETAILS : Matreials - Preparation of nanoparticle-coated substrates - Characterization. - TEST RESULTS : Morphology and tophography - Raman spectroscopy - Physical coating properties. DOI : 10.1007/s11998-010-9309-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9309-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11676 [article]

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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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