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Importance of Micellar Lifetime and Sub-micellar Aggregates in Detergency Processes / M. A. James-Smith in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 44, N° 3/2007 (06-07/2007)
[article]
Titre : Importance of Micellar Lifetime and Sub-micellar Aggregates in Detergency Processes Type de document : texte imprimé Auteurs : M. A. James-Smith, Auteur ; D. O. Shah, Auteur ; D. Shekawat, Auteur Année de publication : 2007 Article en page(s) : p. 142-154 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Filtration
Membranes (technologie)
Micelles -- StabilitéTags : Sub-micellar aggregates Nanoporous membranes Detergency Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Micelles are known to be dynamic entities, rapidly breaking and reforming continuously. Micellar dynamics can be manipulated by the addition of non-ionic or oppositely charged cosurfactant to a sodium dodecyl sulfate solution. Using filtration through nanoporous membranes we have shown that sodium dodecyl sulfate micellar solutions are not only made up of micelles and monomers, but also contain a high concentration of sub-micellar aggregates. The concentration of sub-micellar aggregates decreases as the micellar stability increases. We have investigated the role of micellar stability and sub-micellar aggregates in cleaning of fabrics and hard surfaces such as porcelain dishes. After careful observation, it was determined that more stable micelles and lower concentrations of sub-micellar aggregates lead to more efficient detergency. In summary, it is desirable to have relatively stable micelles and the least number of sub-micellar aggregates for efficient detergency. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3214
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