In this research, PC is continuous phase, and ABS is
dispersed phase. The SEM photomicrographs from Figure 3
show that, the dispersed domains of ABS in the
noncompatibilized blend are greater and more heterogeneous
than in the compatibilized ones. In addition, combination with
3(c) photomicrograph and mechanical properties, SMA is
better than MBS on compatibilizing effect of PC/ABS blend.
This could be because of the reaction that occurs between MA
groups of the SMA and hydroxyl end groups of PC that
improved the interfacial interactions between the blend
components [12].
Figure 4 shows the impact fracture surfaces
of blends with and without compatibilizers. According to
Figure 4, blends with and without compatibilizers both show
ductile fracture behavior. The fracture surface of blend
without any compatibilizer exhibits a relatively smooth
surface in comparison to blends with MBS and SMA. This
phenomenon is in agreement with the impact strength data and
result of Figure 3.