Documents disponibles écrits par cet auteur

Viscous oil emulsification by catastrophic phase inversion / Johanna Galindo-Alvarez in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5575-5583 Titre : Viscous oil emulsification by catastrophic phase inversion : influence of oil viscosity and process conditions Type de document : texte imprimé Auteurs : Johanna Galindo-Alvarez, Auteur ; Veronique Sadtler, Auteur ; Lionel Choplin, Auteur Année de publication : 2011 Article en page(s) : pp. 5575-5583 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Viscosity  Phase  reversal  Emulsification Résumé : This study deals with the description of the influence of oil viscosity and process conditions on catastrophic phase inversion, through the analysis of the effects of formulation and process variables on the dispersed phase fraction at which the inversion is triggered. The in situ simultaneous follow-up of viscosity and conductivity measurements allowed, from a process point of view, to emphasize the effect of the aqueous phase addition rate on the catastrophic phase inversion point (PIP) and multiple w/ O/W emulsion formation. Thus if the aqueous phase is added by very small fractions, formulation dominates and the inversion phenomenon can be accelerated, as a consequence of multiple emulsion formation, that greatly increases the volume of effective dispersed phase. An increase in oil viscosity greatly increased the tendency of the oily phase to become the dispersed phase and promoted the formation of highly concentrated emulsions (about 80 to 95% in volume) after inversion. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128680 [article] Viscous oil emulsification by catastrophic phase inversion : influence of oil viscosity and process conditions [texte imprimé] / Johanna Galindo-Alvarez, Auteur ; Veronique Sadtler, Auteur ; Lionel Choplin, Auteur . - 2011 . - pp. 5575-5583. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5575-5583 Mots-clés : Viscosity  Phase  reversal  Emulsification Résumé : This study deals with the description of the influence of oil viscosity and process conditions on catastrophic phase inversion, through the analysis of the effects of formulation and process variables on the dispersed phase fraction at which the inversion is triggered. The in situ simultaneous follow-up of viscosity and conductivity measurements allowed, from a process point of view, to emphasize the effect of the aqueous phase addition rate on the catastrophic phase inversion point (PIP) and multiple w/ O/W emulsion formation. Thus if the aqueous phase is added by very small fractions, formulation dominates and the inversion phenomenon can be accelerated, as a consequence of multiple emulsion formation, that greatly increases the volume of effective dispersed phase. An increase in oil viscosity greatly increased the tendency of the oily phase to become the dispersed phase and promoted the formation of highly concentrated emulsions (about 80 to 95% in volume) after inversion. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128680