Superswollen microemulsions stabilized by shear and trapped by a temperature quench

© 2011 American Chemical Society

Détails bibliographiques
Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 27(2011), 17 vom: 06. Sept., Seite 10447-54
Auteur principal: Roger, Kevin (Auteur)
Autres auteurs: Olsson, Ulf, Zackrisson-Oskolkova, Malin, Lindner, Peter, Cabane, Bernard
Format: Article en ligne
Langue:English
Publié: 2011
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
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520 |a We studied the solubilization of oil in the C(16)E(8)/hexadecane/H(2)O system. Close to the phase inversion temperature (PIT), the system, at equilibrium, can form either homogeneous states (i.e., microemulsions) at high surfactant concentrations or three-phase states at lower concentrations. We show that, under gentle shear, at a line we named the clearing boundary (CB), located a few degrees below the PIT, the system is homogeneous regardless of the surfactant concentration. We relate this shift of the microemulsion boundary to shear-induced disruption of the asymmetric bicontinuous structure. Although this state quickly relaxes to equilibrium when shear is stopped, we show that it is still possible to trap it into a metastable state through a temperature quench. This method is the sub-PIT emulsification that we described in a previous work (Roger Langmuir 2010, 26, 3860-3867) 
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700 1 |a Olsson, Ulf  |e verfasserin  |4 aut 
700 1 |a Zackrisson-Oskolkova, Malin  |e verfasserin  |4 aut 
700 1 |a Lindner, Peter  |e verfasserin  |4 aut 
700 1 |a Cabane, Bernard  |e verfasserin  |4 aut 
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