New chemistry for reactive emulsifiers / Charles Palmer in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2014)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9 (09/2014) . - p. 22-28 Titre : New chemistry for reactive emulsifiers : Benefits found in production and performance of aqueous alkyds Type de document : texte imprimé Auteurs : Charles Palmer, Auteur Année de publication : 2014 Article en page(s) : p. 22-28 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Anticorrosion Emulsifiants Polyalkydes Revêtements en phase aqueuse:Peinture en phase aqueuse Surfactants Index. décimale : 667.9 Revêtements et enduits Résumé : The conversion of alkyds to waterborne form has a number of problems. Very high viscosities may occur during the invert emulsion process, while the surfactants used may impair the properties of the dried film. A new emulsifier that crosslinks during drying can improve final properties, while allowing emulsification to be completed before the solvent is stripped from the original alkyd. Note de contenu : - The general nature of alkyds - Role of alkyds in the shift to waterborne coatings - Limitations of the emulsification process - Solving the problems created by surfactants - Emulsion preparation procedure outlined - How different surfactants affect coating properties - Adhesion to metal and rust protection are improved - Benefits of reactive surfactants summarised En ligne : https://drive.google.com/file/d/1eJiFo9HofyRJ7jA9OtXYmUJ1WC9c1kMz/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21869 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
16486	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Polymer-surfactant-pigment interactions / Lisa M. Fine in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4526 (07/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4526 (07/2008) . - p. 28-32 Titre : Polymer-surfactant-pigment interactions Type de document : texte imprimé Auteurs : Lisa M. Fine, Auteur ; Charles Palmer, Auteur Année de publication : 2008 Article en page(s) : p. 28-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dynamique moléculaire Pigments Polymères Rhéologie Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Polymers, surfactants and pigments are common ingredients in many products, including paints, inks, cosmetics, adhesives and detergent formulations. There is much that is know about the behaviour of each of these ingredients separately, but the dynamic interations between them in a completed formulation are only beginning to be understood. It is a fact that the behaviour of polymers can be affected by the presence of surfactants and vice versa. The purpose of this paper is twofold : to describe the types of associations that occur between polymers, surfactants and pigments in water-based formulations and to explore the rheology of these systems as a way of elucidating the nature of the interactions between these components. Note de contenu : - Micelles : aggregates of surfactant molecules - Polymer/surfactant complexes - Mecanism of interaction En ligne : https://drive.google.com/file/d/1jXZMK1d4976VOlDqye7zCKtbb8kYlPII/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27200 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
010612	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Rheological assessments / Lisa M. Fine in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4527 (08/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4527 (08/2008) . - p. 39-42 Titre : Rheological assessments Type de document : texte imprimé Auteurs : Lisa M. Fine, Auteur ; Charles Palmer, Auteur Année de publication : 2008 Article en page(s) : p. 39-42 Langues : Anglais (eng) Catégories : Dispersions et suspensions Dynamique moléculaire Encre Éthoxylation alcools et phénols, généralement pour produire de puissants agents surfactants ou mouillants. Pigments Rhéologie Solutions de polymère Surfactants Viscosité Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : In this paper, we assesse the effects of polymer/surfactant interactions in a pigmented water-based dispersionusing rheology, so, it was noted that : 1. Higher levels of ethoxylation led to much lower disper-sion and ink viscosities, and minimisation of pseudo-plastic behaviour. 2. Higher levers of ethoxylation led to higher polymer solution viscosities. 3. In general, with the exception of the octylphenol ethoxylates, more hydrophobie polymers and surfactants decreased the acrylic solution polymer viscosities to a greater degree, possibly due to a screening effect and conformational changes in the polymer. 4. For a given hydrophobe, higher ethoxylation levels led to lower viscosity and elasticity and generally higher print strength in inks. 5. Difunctional surfactants can lead to bridging effects, increasing polymer solution viscosities as well as dispersion and ink viscosities. 6. Lower dispersion viscosities allow for higher pigment loadings during manufacture. 7. Extensional properties have to be considered in the future to fully understand what is occurring. The interactions between polymers, surfactants and pigments can be useful or detrimental to the characteristics of a formulation depending on its end use. Effects on rheology, adsorption at pigment/vehicle interfaces, and surface tension are common. Formulating with surfactant/polymer complexes that have the ability to nnodify the rheology of the system or enhance adsorption at the pigment surface can provide synergistic benefits. These will lead to better printability and press performance. Note de contenu : - Polymer solutions - Dispersion viscosities - Dispersion colour development - Ink study - Rheometric evaluation En ligne : https://drive.google.com/file/d/1ztT4ebR2of53rnHke03OzMR_Hc3EaQx6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27173 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
010613	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 3 / 3)