Solving stain problems / Zeena Cherian in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2020)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2020) . - p. 28-33 Titre : Solving stain problems : New techniques give insights into resistance Type de document : texte imprimé Auteurs : Zeena Cherian, Auteur ; Solomon Jacobson, Auteur ; Michael Koganov, Auteur ; Courtney Usher, Auteur ; Venkat Krishnan, Auteur ; Sharon Wilson, Auteur ; Todd Okavage, Auteur Année de publication : 2020 Article en page(s) : p. 28-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Décoloration Epaississants Granulométrie Liants Molécules -- Modèles Résistance aux taches Revêtements (produits chimiques):Peinture (produits chimiques) Index. décimale : 667.9 Revêtements et enduits Résumé : Combining long-standing and novel analytical methods had produced powerful results on interactions between common household stains and the coating surface, elucidating the mechanism by which stains cause discoloration. Note de contenu : - How have we achieved this ? - Where do we stand ? - Materials - Molecular modelling - Quartz-crystal microbalance (QCM) - Atomic force microscopy - Visual rating and ΔE measurements - Molecular modelling results - QCM results - Atomic force microscopy results - ΔE measurements and the effect of thickener dosage - ΔE measurements and the effect of binder chemistry - Our results - Table 1 : Binders used for the preparation of paints - Table 2 : Change in mass per sensor area after flowing stain and subsequent washing calculated using Sauerbrey equation - Table 3 : Effect of binder chemistry on ΔE values - Table 4 : Effect of particle size on red wine ΔE values - Fig. 1 : 3D pictogram of malvidin-3-glucoside molecule - Fig. 2 : Molecular simulation 3D model of stain molecule and polymer segments - Fig. 3 : Calculated interaction energies of Malvidin-3-glucoside stain molecule with different thickener polymers from molecular modelling - Fig. 4 : Interaction energies of Malvidin-3-glucoside stain molecule with different binder polymer molecules calculated from molecular modelling - Fig. 5 : Quartz crystal microbalance (QCM) results of red wine adsorption on to the paint with and without thickener - Fig. 6 : Quartz crystal microbalance (QCM) results of balsamic vinegar adsorption on to the paint with and without thickener - Fig. 7 : Average adhesion forces calculated from AFM lateral force mapping* - Fig. 8 : Effect of dosage and discoloration of paint surface after stain washing as measured by ΔE - Fig. 9 : Correlating stain interaction energies and ΔE values associated with red wine stain - Fig. 10 : Effect of binder particle size on discoloration measured by ΔE. Higher ΔE indicates increased discoloration from stain En ligne : https://drive.google.com/file/d/1c1_krSjn0MeoyuQZqvccim6BPgnNtcke/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34337 [article]

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