Apparent molal volume of polyelectrolytes

As said in the introduction and in Section 2 ultrasonic data alone (A, N2,Ai and A 2) do not permit to obtain all of the unknown quantities associated with the process represented by Equation (5) (the rate constants k, k2 and the volume changes and AV22 and the concentration [PCJ, [PC2] and [PC3]). Independent measurements become necessary. For this purpose apparent molal volumes of polyelectrolytes have been determined. 

Apparent Molal Volumes of Polyelectrolytes and Their Use for the Determination of the Volume Change Upon Counter-ion Site Binding... 

Apparent molal volumes of polyelectrolytes and volume changes upon counter-ion binding... 

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