ABSTRACT
The technological importance of polymer blends has long been recognized by polymer scientists and blending is now a well established method to design new materials with specifically tailored properties possessed by neither of the two constituent polymers separately. Miscibility at a molecular level is not required for a blend to be of practical interest although a certain extent of compatibility between the constituents is necessary. In many cases one therefore deals with a multiphase system whose properties depend on the amount and composition of the phases, their morphology as well as the characteristic of the interphases.
