Ternary systems consisting of polypropylene (PP), ethylene-propylene-d
ieneterpolymer (EPDM) and different types of inorganic fillers (kaolin
, BaSO4) have been investigated with respect to their mechanical behav
ior. On the basis of an interphase model, it was possible using the mo
dified van der Poel equation to describe the temperature dependence of
the storage modulus G'(T) and the loss modulus G''(T). The interphase
properties G'(T) and G''(T) could be calculated.