Static scattering from polyelectrolyte solutions
نویسندگان
چکیده
2014 The static scattering intensity from a system composed of charged, coiled polyions, counterions and coions is investigated theoretically. The polyion configuration is described by a wormlike chain form factor having a persistence length and an excluded volume parameter obtained from Odijk’s theory. Counterion condensation is accounted for in both, the interactions between polymer segments on different polymers and free ions, and the single polymer form. Modelling the polymer segments, or monomers, as charged hard spheres allows to express the correlations between segments on different chains and free ions in terms of sizes and charges of the constituents. Within the three-component description results on the scattering from polyions and from counterions are obtained and their relation to experimental data is discussed. J. Phys. France 50 (1989) 449-460 15 FÉVRIER 1989,
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