Impact of metallic ions on electrohydrodynamics of soft colloidal polysaccharides

Electrostatic and hydrodynamic properties of carboxymethyldextran (CMD), a charged and well-defined polysaccharide, were evaluated in the presence and in the absence of divalent cations (calcium and cadmium) in aqueous NaNO3 solution. For that purpose, size, electrophoretic mobility and protolytic features of CMD macromolecules were derived from dynamic light scattering, electrophoresis and proton titration measurements. Electrokinetic...