NaA zeolite stacking systems and polystyrene-polypyrrole suspensions were measured by dielectric spectroscopy in a frequency range from 40 Hz to 110 MHz. An obvious dielectric relaxation aroused from interfacial polarization was observed, at 105 Hz in the NaA zeolite stacking systems and 107 Hz in polystyrene-polypyrrole suspensions. According to dielectric analysis by Hanai’s theory, the obvious gap between the actual volume fraction and analyzed volume fraction was found. Moreover, the difference degree depended on the actual concentration of the dispersion system. By analyzing the original Wagner’s model, the physical meaning of the analyzed volume fraction was clarified, and interaction among the dispersed particles is responsible to the difference degree between the two volume fractions. As a result, a dielectric analysis way was offered to confirm the statistic arrangement pattern of particles (SAPP) in a colloid dispersion system. When the actual concentration is above the critical value, the optimum SAPP is a hexahedral stacking pattern. With the concentration decreasing, the optimum SAPP transits to the simple cubic stacking pattern.

Key words: dielectric spectroscopy, NaA zeolite, polystyrene-polypyrrole particle, volume fraction