The stoichiometry of the reactions between polycations (protonated polyethyleneimine, ionene, poly (vinylbenzyltrimethylammonium chloride)) and polyanions (sodium polyacrylate, potassium polystyrenesulfonate) was investigated by conductivity measurements and elemental analyses. It was found that they reacted almost in stoichiometry to give a polyelectrolyte complex. The water vapor adsorption and dielectric properties of the complex were investigated. The complex showed the sigmoid type adsorption behavior similar to the adsorption behavior of a hydrophilic material. The complex exhibited a marked dielectric dispersion over a wide frequency range of 102∼106Hz.
