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Title
Surfactant Mediated Particles Aggregation in Nonpolar Solvent
Type Presentation
Keywords
Surfactant, Particle Aggregation, Dynamic Light Scattering
Abstract
Aggregation of colloids in decane in the presence of AOT surfactant was investigated using three different methods: First of all electrophoretic mobility measurements were performed to study the particle charging behavior. As a next step particle aggregation kinetics were measured by dynamic light scattering, determining the particle stability ratio for different suspensions. AFM-based colloidal probe technique was used to obtain direct force measurements between silica particles in order to obtain the relevant Hamaker constant, necessary for evaluating the van der Waals attraction.
Researchers Marco Galli (First researcher) , Mojtaba Farrokhbin (Second researcher) , Biljana Stojimirovic (Third researcher) , Gregor Trefalt (Fourth researcher)