Electrode polarization arising from charge carriers accumulating at the interface between an electrode and nylon 1010 was investigated with dielectric relaxation spectroscopy. In the frequency spectra of nylon 1010, the dielectric permittivity showed high values in the region of low frequencies and high temperatures. With the Havriliak-Negami function used to fit the experimental spectra, the result revealed that the high values originated from electrode polarization and direct-current conductivity. For electrode polarization, the dielectric strength, independent of the temperature, was about 1150, and the temperature dependence of the relaxation time followed the Vogel-Tammann-Fulcher equation. Fitting with the Vogel-Tammann-Fulcher equation, the parameters tau(0) = 1.33 x 10(-10) s and T-0 = 303.2 K were proposed (where tau(0) is the relaxation time at a very high temperature and T-0 is the temperature at which the relaxation time becomes extremely large), and they suggested that the motion of the polymeric chains was one of the factors leading to charge-carrier transport at temperatures higher than the glass-transition temperature. (c) 2006 Wiley Periodicals, Inc.