Conductivity relaxation of polyaniline

摘要: Measurements on polyaniline using dielectric analysis (DEA, −50°C to 240°C, 0,4 Hz 105 Hz), differential scanning calorimetry (DSC, 30°C 240°C) and infrared spectroscopy (IR) after heat treatment from 25°C 300°C are carried out. After conversion of DEA results complex electric modulus, the conductivity relaxation time distribution can be obtained, which remains unchanged for temperatures below 160°C becomes narrower in temperature range 180°C 240°C due occurrence crosslinking reactions, as is confirmed by exothermic behavior above decrease relative intensity quinoid absorption with respect that aromatic ring. The reaction causes a dc conductivity, narrowing an increase activation energies relaxation.