The compatibility of polymer blends directly determines the phase structure and properties of the composites. The study of compatibility is the basis of polymer blending modification. In this paper

five common rheological methods for characterizing the compatibility of polymer blends are introduced

i.e.

the glass transition temperature method

the low-frequency slope method

the Cole-Cole curve method

the time-temperature equivalence principle method and the creeprecovery method. The rheological methods have many advantages

such as convenience sample preparation

less impact on samples

good applicability and high sensitivity

which are poweful means to characterize the compatibility of polymer blends.