Interfacial rheology: Principle, applications, and instrumentation

information on the behavior and interaction of molecules at interfaces, which is important for the application and processing of many materials of the general type: foods, beverages, pharmaceuticals, coatings, household and personal products, etc. It is the basis of many res e a rch programs, i.e., the stability of foams and emulsions, membrane technology, the development of new materials to replace natural substances such as saliva, and the development of aqueous products to replace solvent-based materials. This paper describes the CIR-100 interfacial rheometer (Camtel, Royston, Herts, U.K.) (F i g u re 1) as it applies to this mode of analytics in studying the above materials.