The samples used in this study were checked on crystallinity by wide-angle X-ray diffraction (WAXD). In the samples no crystalline diffraction could be detected by
2D-WAXD measurements. Consequently, we ruled out the effect of crystallization on the toughening behavior in our samples. The toughening mechanism of rubber-toughened plastics can be deduced from the local deformation mechanism [40]. The mechanisms for impact and tensile processes were studied separately taking into account the different deformation conditions.