Electrical property measurements
The samples for electrical propertymeasurementswere prepared by
compressionmolding the samples into 2 mmthick sheets in a hydraulic
press at a temperature of 140 °C. The both surfaces of all the samples
were coated with silver paste to create a better contact with the
electrodes. In addition the samples were dried over night in an oven at
40 °C under vacuum and then kept in dried environment, for the
elimination of any moisture effects. Volume resistance of the samples
was measured using KEITHLEY 6517A Electrometer at room temperature
to 100 °C with a step of 25. The capacitance and tan δ of the blends
were measured at frequencies ranging from Hz to MHz at different
temperatures using an Impedance Analyzer model N4L PSM1735.