Abstract
AbstractPoly(vinylbenzyltrialkylammonium) salts with alkyl groups having 1 to 8 carbon atoms on the ammonium nitrogen atom were synthesized. The polymers are soluble in water but have different solubility when low molecular salts such as sodium chloride are added. The reduced solution viscosity in water showed typical polyelectrolyte behavior. Larger alkyl groups make the polymers much less soluble and even insoluble in water. The polymers are still soluble in methanol. To study the counterion‐polyion interactions in semidilute and dilute solution the electrical conductivity and counterion activity were investigated in a range of low polyelectrolyte concentration (10−6<cp10−3 monomol/l). With decreasing concentration, below the overlap concentration, a rapid increase of the equivalent conductivity occurred followed by a maximum. The electrochemical solution properties were found to be influenced by the size of the substituents of the cationic group.
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