Abstract
The dielectric properties of chitosan in aqueous solutions have been measured as a function of the degree of ionization in the frequency range from 1 kHz to 10 MHz. The dielectric spectra have been analyzed in terms of two contiguous dispersions described by a Cole-Cole and Debye relaxation function. The dependence of the dielectric parameters (dielectric increments and relaxation frequencies) on the degree of ionization cannot be understood simply as a result of polarization of the ionic atmosphere around the polyion, on the basis of the polyelectrolytic counterion fluctuation model
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