in the viscosity values is mainly attributed to the ratio of PP degradation
and EOC crosslinking. Decrease in viscosity (DB7) indicates
the better molecular motion in the polymer chains which might be
due to the formation of more degraded chains in the PP phase. In
other words, degradation in the PP phase overweighs the crosslinking
effect at higher loading of 1,2-PB. These low molecular weight
species form the sheath and aid in lubricating action between the
capillary and the extrudate