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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Poster Session III

CPP 50.15: Poster

Dienstag, 17. März 2020, 14:00–16:00, P1C

Synthesis and characterization of charged and sterically stabilized optically transparent aqueous suspensions — •Kathrin Eitel and Hans-Joachim Schöpe — Universität Tübingen, Germany

We report the synthesis and characterization of monodisperse, highly charged and sterically stabilized colloidal particles with low index of refraction (n=1,38). The core shell particles consist of 1H-1H Heptafluorobutyl-methacrylate (core) and polyethylenelycol-methacrylate (shell). We characterize the particles using various methods to determine the particle size and the size polydispersity, the core and shell dimensions, the optical properties, the diffusion coefficients, the effective particle charge and structure formation. The fluorination of the core allows an optical index match using DMSO as a co-solvent. The interparticle interaction potential can in principle be tuned by the content of excess ions and by the addition of free polymer over an extremely wide range. These fluorinated particle core shell particles are excellently suited as model system to study structure, dynamics and rheology as function of the interaction potential in and out of thermodynamic equilibrium using optical methods.