Predicting for thermodynamic instabilities in water/oil/surfactant microemulsions: A mesoscopic modelling approach. Duvail, M.; Arleth, L.; Zemb, T.; and Dufreche, J. JOURNAL OF CHEMICAL PHYSICS, APR 28, 2014.
doi  abstract   bibtex   
The thermodynamics and structural properties of flexible and rigid nonionic water/oil/surfactant microemulsions have been investigated using a two level-cut Gaussian random field method based on the Helfrich formalism. Ternary stability diagrams and scattering spectra have been calculated for different surfactant rigidities and spontaneous curvatures. A more important contribution of the Gaussian elastic constants compared to the bending one is observed on the ternary stability diagrams. Furthermore, influence of the spontaneous curvature of the surfactant points out a displacement of the instability domains which corresponds to the difference between the spontaneous and effective curvatures. We enlighten that a continuous transition from a connected water in oil droplets to a frustrated locally lamellar (oil in water in oil droplets) microstructure is found to occur when increasing the temperature for an oil-rich microemulsion. This continuous transition translated in a shift in the scattering functions, points out that the phase inversion phenomenon occurs by a coalescence of the water droplets. (C) 2014 AIP Publishing LLC.
@article{ISI:000336047700064,
	Abstract = {{The thermodynamics and structural properties of flexible and rigid
   nonionic water/oil/surfactant microemulsions have been investigated
   using a two level-cut Gaussian random field method based on the Helfrich
   formalism. Ternary stability diagrams and scattering spectra have been
   calculated for different surfactant rigidities and spontaneous
   curvatures. A more important contribution of the Gaussian elastic
   constants compared to the bending one is observed on the ternary
   stability diagrams. Furthermore, influence of the spontaneous curvature
   of the surfactant points out a displacement of the instability domains
   which corresponds to the difference between the spontaneous and
   effective curvatures. We enlighten that a continuous transition from a
   connected water in oil droplets to a frustrated locally lamellar (oil in
   water in oil droplets) microstructure is found to occur when increasing
   the temperature for an oil-rich microemulsion. This continuous
   transition translated in a shift in the scattering functions, points out
   that the phase inversion phenomenon occurs by a coalescence of the water
   droplets. (C) 2014 AIP Publishing LLC.}},
	Article-Number = {{164711}},
	Author = {Duvail, Magali and Arleth, Lise and Zemb, Thomas and Dufreche, Jean-Francois},
	Date-Added = {2017-10-03 14:11:19 +0000},
	Date-Modified = {2017-10-03 14:11:19 +0000},
	Doi = {{10.1063/1.4873357}},
	Eissn = {{1089-7690}},
	Issn = {{0021-9606}},
	Journal = {{JOURNAL OF CHEMICAL PHYSICS}},
	Month = {{APR 28}},
	Number = {{16}},
	Orcid-Numbers = {{Arleth, Lise/0000-0002-4694-4299 Duvail, Magali/0000-0003-1586-260X}},
	Researcherid-Numbers = {{Arleth, Lise/M-4705-2014 Duvail, Magali/B-7601-2016}},
	Title = {{Predicting for thermodynamic instabilities in water/oil/surfactant microemulsions: A mesoscopic modelling approach}},
	Unique-Id = {{ISI:000336047700064}},
	Volume = {{140}},
	Year = {{2014}},
	Bdsk-Url-1 = {http://dx.doi.org/10.1063/1.4873357%7D}}
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