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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la201685x
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|a eng
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|a Roger, Kevin
|e verfasserin
|4 aut
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|a Superswollen microemulsions stabilized by shear and trapped by a temperature quench
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 29.12.2011
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|a Date Revised 31.08.2011
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2011 American Chemical Society
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|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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|a Journal Article
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|a Olsson, Ulf
|e verfasserin
|4 aut
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|a Zackrisson-Oskolkova, Malin
|e verfasserin
|4 aut
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|a Lindner, Peter
|e verfasserin
|4 aut
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|a Cabane, Bernard
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 27(2011), 17 vom: 06. Sept., Seite 10447-54
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|x 1520-5827
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|g volume:27
|g year:2011
|g number:17
|g day:06
|g month:09
|g pages:10447-54
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