Accueil
Résultat de la recherche
2 résultat(s) recherche sur le tag 'Cellulose(hydroxyéthyl)'
Ajouter le résultat dans votre panier Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche
Waterborne latex coatings of color : II. Surfactant influences on color development and viscosity / David M. Mahli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
[article]
Titre : Waterborne latex coatings of color : II. Surfactant influences on color development and viscosity Type de document : texte imprimé Auteurs : David M. Mahli, Auteur ; Jon M. Wegner, Auteur ; J. Edward Glass, Auteur ; Daniel G. Phillips, Auteur Année de publication : 2005 Article en page(s) : p. 635-647 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété rhéologique Cellulose éther dérivé Etude expérimentale Couleur optique Viscosité cisaillement Relation formulation propriété Cellulose(hydroxyéthyl) Peinture émulsion Talc Pigment minéral Agent surface anionique Noir carbone Dimension particule Epaississant non ionique Matériau revêtement eau Index. décimale : 667.9 Revêtements et enduits Résumé : A matrix of coating variables, nonassociative versus associative thickeners, different latex median particle sizes, individual surfactants and colorants [carbon black (CB), red, and yellow pigments], was examined for their influence on variances in coatings rheology and color development. Within the different coating groups, the variable of interest in this study was the surfactant added to the colorant formulation. In all three colorant formulations, sodium dodecyl sulfate (an anionic surfactant) provided poorer color development (CD) than in applied formulations containing an equivalent nonylphenol oxyethylene (EO) surfactant. In CB formulations, nonionic surfactants with higher EO content provide improved color development at low (2 mM) concentrations, but near equality in CD is achieved with low EO surfactants at higher concentrations, in contrast to CB formulations, red and yellow colorants exhibit good color development with high EO content nonionic surfactants only at low nonionic surfactants concentrations. This variance appears to be related to the interactions of surfactants with inorganic pigments (talc and laponite) in the colorant formulation. The coating's rheology is related to latex, thickeners, and surfactant components of the paint, as has been noted in previous studies, but not to the nature of the color pigment. The viscosity of the hydroxyethyl cellulose (nonassociative type) and HEUR (associative type) thickened paint decreased with colorant addition due to dilution effects. There were no unusual deviations with the NP(EO)x surfactants, except when a large hydrophobe nonionic surfactant [e.g., C18H37(EO)100] is added. In HEC thickened coatings, the viscosity decreases when C18H37-(EO)100 is in the colorant due to that surfactant inhibiting depletion flocculation. In the C18H37(EO)100 coatings containing the HEUR thickener, significant increases in viscosity were observed, above the dilution values observed with the colorant addition. This is related to the viscosity maximum in the low concentration of HEUR with the C18H37(EO)100 surfactant. Color development is independent of the viscosity profile of the coating. DOI : 10.1007/BF02774593 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774593.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3789
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 8 (10/2005) . - p. 635-647[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 003121 - Périodique Bibliothèque principale Documentaires Disponible A perspective on the history of and current research in surfactant-modified, water-soluble polymers / J. Edward Glass in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 913 (02/2001)
[article]
Titre : A perspective on the history of and current research in surfactant-modified, water-soluble polymers Type de document : texte imprimé Auteurs : J. Edward Glass, Auteur Année de publication : 2001 Article en page(s) : p. 79-98 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture eau Polymère Solubilité Solution aqueuse Modification chimique Agent surface modifié Adjuvant Epaississant Hydrophobicité Cellulose(hydroxyéthyl) Cellulose(éthyl hydroxyéthyl) Article synthèse Index. décimale : 667.9 Revêtements et enduits Résumé : In this review of surfactant-modified, water soluble polymers, a definition of terms and their historical development is given for each associative polymer type. Studies that have contributed to a fundamental understanding of the structural influences of these associative polymers on the solution behavior of such thickeners are reviewed critically avoiding the sales approach and over exuberance exhibited in so many publications in this area of coatings science. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5690
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 913 (02/2001) . - p. 79-98[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001221 - Périodique Bibliothèque principale Documentaires Disponible