Two-dimensional gels

Abstract

Cross-linked membranes are interesting model systems for numerous applications in industry and science. Such structures can be formed from different types of diesters just at the interface between oil and water. We have systematically studied rubber-elastic, glass-like and transient membranes which are stablized by physical or chemical contacts. The cross-linking process occurs through radical reactions which can be initiated by UV irradiation. This interfacial polymerization is not restricted to flat surfaces, and the corresponding films can be used for the stabilization of different types of emulsions. Oil droplets which are surrounded by cross-linked membranes, form simple systems which exhibit interesting rheological properties. During flow, deformation and breaking processes occur which are strongly influenced by the elastic properties of the enclosing membrane. © 1993.