ABSTRACT
It is generally very dif†cult or even impossible to predict the properties of a blend; however, this is only the second step. The †rst problem is an understanding of the mixing properties (i.e., knowledge of under which conditions two polymers will form either a homogeneous phase or a twophase structure) [2]. The blend miscibility is an important effect to determine the structure and properties of the new material. Polymer blend miscibility is therefore a central subject in the science and technology of polymers.
