Fig. 2 showsthe effect of different

Fig. 2 shows
the effect of different extrusion screw speeds (60e150 rpm)
on the mechanical properties of 80/20 wt % blend. It was
found that when the screw speed increased, the notched Izod
impact strength and the Young’s modulus did not change.
This could be due to control of these properties by the injection
process in the final step. This indicates that the extrusion
screw speed has less effect on the mechanical properties than
does the NR content in the blend.