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Piezoelectricity in PANI filled Nylon 11

The piezoelectric response of pure Nylon 11 and conducting Polyaniline (PANI) filled Nylon 11 is presented. Nylon 11 samples were filled with PANI fillers of two different concentrations (1% and 5% w/w) each. The samples were poled using Corona discharge technique with poling field of 200 kV/cm and 350 kV/cm. The piezoelectric strain constant d31, stress constant e31 and electromechanical coupling coefficient k31 of pure and PANI filled samples were measured up to 100°C. The study suggests that the piezoelectric coefficient (d31) of the PANI filled Nylon 11 shows considerable decline with respect to its individual component. The thermal stability of the PANI filled samples improved and is almost stable at comparatively low temperature than pure Nylon 11.