This paper presents experimental data on sodium ion activities obtained by two methods in salt-free solutions for four anionic polyelectrolytes in their completely neutralized sodium salt form. Treatment of the data reveals some quantitative disagreement with theoretical predictions although there is considerable qualitative agreement with the main proposition of Manning's counterion condensation theory. A striking disparity between.potentiometric and osmometric results is noted and an explanation is offered.
Посилання на статтю:
Counterion activity in dilute salt-free solutions of some anionic polyelectrolytes / Byomkesh Biswas*, Peter A. Williams and Glyn O. Phillips // Polymer. – 1992. – Vol 33. – P. 1284-1288.