Research Topic

Polymers and colloids at interfaces

This subtheme addresses the development of different types of advanced emulsions and dispersions. This includes the synthesis of colloidal polymer particles in emulsions with well-defined polymer composition and surface stabilization components in order to study their interaction with other colloidal particles in the system, e.g., mimicking water-borne coating formulations. Also, methods to produce monodisperse colloidal particles using microfluidics are developed to study self-organization strategies over multiple length scales combining bottom-up and top-down approaches.
Furthermore, we study water-in-water (W/W) and other shared-solvent emulsions, which can be prepared by mixing two segregative polymeric and/or colloidal compounds in water. This leads to phase separation and the challenge is to stabilize the interface of such W/W emulsions, which have properties differing tremendously from classical oil/water emulsions. We aim to contribute to this challenge by increasing our fundamental understanding of these macromolecular interfaces using new experimental techniques such as X-ray reflectometry and theoretical insights.