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Effect of fatty acid chain of tweens on the micellar behavior of dodecylbenzyldimethylammonium chloride / Reshu Sanan in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7319-7325 Titre : Effect of fatty acid chain of tweens on the micellar behavior of dodecylbenzyldimethylammonium chloride Type de document : texte imprimé Auteurs : Reshu Sanan, Auteur ; Rakesh Kumar Mahajan, Auteur Année de publication : 2011 Article en page(s) : pp. 7319-7325 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Fatty  acid  chain Résumé : The present work is aimed at studying the interactions between mixed micelles of nonionic surfactants, Tweens (Tween 20, Tween 40, Tween 60, and Tween 80) and cationic surfactant, dodecylbenzyldimethylammonium chloride (C 12BzCl), and to draw a comparison between the effect of different Tweens with respect to fatty acid chain present in them. Both from the industrial and research point of view, the present day need for newer materials has been diverted to surfactant-additive systems rather than single surfactant systems because of the great fundamental, technological, and biological importance associated with the mixed micelles. Moreover, Tweens being biocompatible, stable, and relatively nontoxic can be used to enhance the efficacy of benzalkonium (Bz)-based disinfection products. Conductivity and surface tension techniques have been employed to determine various micellar parameters like critical micellar concentration (cmc), degree of counterion binding (β), standard free energy of micellization (ΔGomic), excess free energy of mixing (ΔGoex), interaction parameter (βm) and activity coefficients for the Tweens (f1) and C12BzCl (f2) in the mixed micelles using Rubingh's, Motomura's, and Maeda's approach. The negative values of βm indicate synergism in the mixtures which is highly beneficial as it reduces the total amount of surfactant used in a particular application resulting in reduction of cost and environmental impact. The results have also been discussed in terms of short-range interactions between the two types of surfactants. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239046 [article] Effect of fatty acid chain of tweens on the micellar behavior of dodecylbenzyldimethylammonium chloride [texte imprimé] / Reshu Sanan, Auteur ; Rakesh Kumar Mahajan, Auteur . - 2011 . - pp. 7319-7325. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7319-7325 Mots-clés : Fatty  acid  chain Résumé : The present work is aimed at studying the interactions between mixed micelles of nonionic surfactants, Tweens (Tween 20, Tween 40, Tween 60, and Tween 80) and cationic surfactant, dodecylbenzyldimethylammonium chloride (C 12BzCl), and to draw a comparison between the effect of different Tweens with respect to fatty acid chain present in them. Both from the industrial and research point of view, the present day need for newer materials has been diverted to surfactant-additive systems rather than single surfactant systems because of the great fundamental, technological, and biological importance associated with the mixed micelles. Moreover, Tweens being biocompatible, stable, and relatively nontoxic can be used to enhance the efficacy of benzalkonium (Bz)-based disinfection products. Conductivity and surface tension techniques have been employed to determine various micellar parameters like critical micellar concentration (cmc), degree of counterion binding (β), standard free energy of micellization (ΔGomic), excess free energy of mixing (ΔGoex), interaction parameter (βm) and activity coefficients for the Tweens (f1) and C12BzCl (f2) in the mixed micelles using Rubingh's, Motomura's, and Maeda's approach. The negative values of βm indicate synergism in the mixtures which is highly beneficial as it reduces the total amount of surfactant used in a particular application resulting in reduction of cost and environmental impact. The results have also been discussed in terms of short-range interactions between the two types of surfactants. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239046