The bicontinuous microemulsions consisting of a polymerisable zwitterionic surfactant 3-((11-acryloyloxyundecyl)imidazolyl) propyl sulfonate (AIPS) and other monomers can be cross-polymerised to form good proton conductive membranes.
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Fabrication of tetraethyl orthosilicate/ethanol-water surfactant-free microemulsions and their applications in self-templating synthesis of monodispersed silica colloidal spheres.
RSC Adv
December 2024
Research Center for Water Resources and Interface Science, School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200062 PR China +86-021-54340130 +86-021-54340130.
Surfactant-free microemulsions (SFMEs) composed of tetraethyl orthosilicate (TEOS), ethanol, and water have been successfully fabricated by visual titration and electrical conductivity methods. Three types of SFMEs, water in TEOS (W/O), bicontinuous (BC) and TEOS in water (O/W), were identified by dynamic light scattering and transmission electron microscopy with negative-staining methods. We demonstrated that there are significant differences in the properties of silica products synthesized with different types of SFMEs, and monodispersed silica colloidal spheres (MSCSs) can only be synthesized in the O/W type SFMEs.
View Article and Find Full Text PDFInnovative use of lipid mesophase dispersions for bisphenol A sequestration in water.
J Colloid Interface Sci
February 2025
Interfaces, Confinement, Matériaux et Nanostructures (ICMN), CNRS-Université d'Orléans, UMR 7374, 1b rue de la Férollerie, CS 40059, 45071 Orléans Cedex 2, France.
Hypothesis: Mesophase dispersions are promising colloids for removing micropollutants from water. We hypothesized that the complex internal nanostructure and tunable lipid/water interface amounts play a crucial role in absorbed quantities. Modifications in interfacial organization within the particles while trapping the micropollutant is assumed.
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Soft Matter
November 2024
Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany.
A confined bicontinuous CE-DO--octane microemulsion is studied using neutron spin echo spectroscopy (NSE). Controlled pore glasses serve as confining matrices with pore diameters ranging from 24 to 112 nm. Firstly, the microemulsion in bulk is investigated by NSE and dynamic light scattering, which allows the determination of the unperturbed collective dynamics as well as the observation of the undulation of the surfactant film.
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Soft Matter
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University of Tennessee, Department of Chemistry, USA.
Microemulsions (MEs) have many industrial applications, where recent developments have shown that MEs can be utilized for electrochemical applications, including potentially in redox flow batteries. However, understanding the structure and dynamics of these systems, including at a surface, is needed to direct and rationally control their electrochemical behavior. While bulk solution measurements have provided insight into their structure, their assembly at an interface also impacts the electron (to the electrode) and ion (across the surfactant) charge transfer processes in the system.
View Article and Find Full Text PDFConfinement induced change of microemulsion phase structure in controlled pore glass (CPG) monoliths.
RSC Adv
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Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124 10623 Berlin Germany
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 CE-water--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.
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