Abstract
Electrical conductivities of aqueous solutions of an anionic polyelectrolyte sodium carboxymethylcellulose with different degrees of substitution have been reported as a function of concentration and temperature. The conductance-concentration data have been analyzed with the modified Manning counterion-condensation model appropriate for semidilute polyelectrolyte solutions, considering the de Gennes scaling description of the polyion configuration. 36–55% of the counterions were found to remain condensed and the condensation process was shown to be spontaneous. Although the level of counterion-condensation depends appreciably on the degree of substitution, it was found to remain invariant with the polyelectrolyte concentration and the temperature. The free energies of counterion-condensation, the ratios of the mobility of the polyion to that of the counterion, the polyion transference numbers, and the coefficients of monomer-solvent friction have been evaluated. The effects of the polyion charge, its size, and the bulk viscosity of the media on the polyion-counterion interactions have also been discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
