All the formulations were melt-compounded in a single
screw extruder (Wortex) with screw diameter of 30 mm
and L/D ratio of 34. The screw used in the current study has
a MADDOCK mixing element located at the end of the
metering zone. The melt compounding temperature at
different zones was independently controlled in order to
achieve a temperature profile in the range of 155e170 C.
The screw speed was set at 60RPM