| Titre : |
Synergies of hydrophobic polymers and surfactants on surface activity and cleaning performance |
| Type de document : |
texte imprimé |
| Auteurs : |
M.-E. Chateau, Auteur ; Michael Lang, Auteur ; Markus Antonietti ; K. Rodrigues ; A. M. Carrier |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 76-82 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Détergents
Dodécylbenzènesulfonate
Ethoxylate d'alcool
Formulation (Génie chimique)
Hydrophobie
Polycarboxylates
Tension superficielle
|
| Index. décimale : |
668.1 Agents tensioactifs : savons, détergents |
| Résumé : |
Detergency is the removal of soil through a complex process involving interactions between the wash liquor, the soil and the substrate. In this paper, we describe the results of our preliminary investigations into polymer-surfactant interactions, focusing on primary detergency in laundry applications. We have studied the interaction between surfactants typically used in laundry formulations and hydrophobically modified polycarboxylate polymers. These polymers are a series of copolymers of acrylic acid and styrene with varying molar amounts of the styrene hydrophobe. The effect of a partial replacement of the surfactant by these polymers was characterized by the static surface tension measurements. These measurements predict that these polymers should aid in primary detergency. Primary detergency tests show that these polymers in combination with the anionic surfactant sodium-dodecylbenzenesulfonate (LAS) improve detergency when the LAS level is below its critical micelle concentration (CMC). Even more remarkable is the oily soil release improvement with the non-ionic alcohol ethoxylate (AE) surfactant, C13-15,7 E0, even above the CMC. This is possibly due to a change in micelle shape, which favours spontaneous emulsification, and subsequent soil release by mechanical action. |
| Note de contenu : |
- MATERIALS AND METHODS : Hydrophobically modified polycarboxylate polymers - Surfactants : LAS and AE (7 EO) - Physicochemical measurements - Primary detergency test protocol for European was conditions
- RESULTS AND DISCUSSION : Polymer interactions with sodium-dodecylbenzenesulfonates (LAS) - Polymer interactions with an alcohol ethoxylate non ionic surfactant |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30984 |
in SOFW JOURNAL > Vol. 133, N° 4 (04/2007) . - p. 76-82
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