Dynamic vulcanisates are thermoplastic elastomers combining thermoplastic and elastic properties. These compounds consist of a thermoplastic matrix containing small rubber particles, forming the major weight content, and are as such responsible for the typical rubber-elastic behaviour of the blend. The thermoplastic matrix allows processing by extrusion, injection moulding, and calendering. During processing dynamic vulcanisates are exposed to high cooling rates, which are known to have an influence on the morphology formation especially in semi-crystalline polymers such as polypropylene. In order to simulate processing conditions and to study their influence on crystallisation and morphological phase distribution of dynamic vulcanisates intensive cooling experiments, reaching defined cooling rates up to 1000 K/s, were performed on the dynamic vulcanisates, PP/EOC 30/70 and PP/EPDM 30/70 peroxidic crosslinked as well as PP/EPDM 30/70 crosslinked by phenolic resin, and their pure components, isotactic polypropylene, polyethylene-co-1-octene, ethylene-propylene-diene-rubber. Thermoplast - rubber - composition and amount of crosslinking agent have been varied in order to see how these changes influence the cooling rate - morphology relatiponship. Structure and Morphology have been characterized by optical and atomic force microscopy as well as wide-angle x-ray diffraction. Thermal behaviour has been tested by differential scanning calorimetry and dynamic mechanical analysis. Mechanical properties have been determined by microhardness and minitiature tensile testing. By means of FTIR rheooptical analysis the orientation behavior of the different phases was determined.