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Confinement induced change of microemulsion phase structure in controlled pore glass (CPG) monoliths.
Dahl, Margarethe; Gommes, Cedric J; Haverkamp, René; Wood, Kathleen; Prévost, Sylvain; Schröer, Pierre; Omasta, Tomás; Stank, Tim Julian; Hellweg, Thomas; Wellert, Stefan.
Afiliación
  • Dahl M; Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany s.wellert@tu-berlin.de.
  • Gommes CJ; Department of Chemical Engineering, University of Liège B6 A 3 Allée du 6 Août B-4000 Liège Belgium.
  • Haverkamp R; Department of Physical and Biophysical Chemistry, University of Bielefeld, Universitätsstraße 25 33615 Bielefeld Germany.
  • Wood K; Australian Nuclear and Technology Organisation New Illawarra Rd Lucas Heights NSW 2234 Australia.
  • Prévost S; Institut Laue-Langevin 71 Avenue des Martyrs F-38042 Grenoble France.
  • Schröer P; Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany s.wellert@tu-berlin.de.
  • Omasta T; Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany s.wellert@tu-berlin.de.
  • Stank TJ; Department of Physical and Biophysical Chemistry, University of Bielefeld, Universitätsstraße 25 33615 Bielefeld Germany.
  • Hellweg T; Department of Physical and Biophysical Chemistry, University of Bielefeld, Universitätsstraße 25 33615 Bielefeld Germany.
  • Wellert S; Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany s.wellert@tu-berlin.de.
RSC Adv ; 14(39): 28272-28284, 2024 Sep 04.
Article en En | MEDLINE | ID: mdl-39239284
ABSTRACT
We use small-angle neutron scattering (SANS) to investigate the structure and phase behavior of a complex fluid within meso- and macroporous matrices. Specifically, bicontinuous microemulsions of the temperature-dependent ternary system C10E4-water-n-octane are investigated in controlled pore glass (CPG) membranes with nominal pore diameters of 10 nm, 20 nm, 50 nm, and 100 nm. The scattering data were analyzed using the Teubner-Strey model and a multiphase generalization of clipped Gaussian-field models. The analysis indicates changes in the phase structure of the bicontinuous microemulsion in the membranes with the smallest pores. This is attributed to a shift in the ternary phase diagram toward a three-phase structure at lower surfactant concentrations. This effect is likely related to a larger internal surface area in the membranes with smaller pores, which enhances surfactant adsorption onto the pore walls.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido