The effect of increased crystallization on the electrical properties of nylon‐12

The dielectric properties of 30% crystalline dry Nylon‐12 have been measured over the frequency range 10–105 Hz and temperature range 300–450 K, and the effect of its annealing at 423 K investigated both by dielectric measurement and differential scanning calorimetry. Annealing causes its crystallization to α phase, which increase the dc conductivity and decreases the contribution to orientation polarization, but does not alter the shape of the relaxation spectrum. The orientation polarization in Nylon‐12 involves two processes, each of which occurs above the glass‐transition temperature of Nylon‐12, but only the spectra of the lowest temperature process could be clearly resolved.