By Mitsuru Nagasawa
The Advances in Chemical Physics sequence offers the chemical physics box with a discussion board for serious, authoritative reviews of advances in each sector of the self-discipline. This quantity explores themes from Thermodynamic homes of Polyelectrolyte recommendations to ion-binding of polyelectrolytes. The publication features:
- The simply sequence of volumes to be had that offers the innovative of study in chemical physics
- Contributions from specialists during this box of research
- Representative cross-section of study that questions tested considering on chemical solutions
- An editorial framework that makes the ebook a superb complement to a sophisticated graduate category in actual chemistry or chemical physics
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Additional info for Advances in Chemical Physics, Volume 158: Physical Chemistry of Polyelectrolyte Solutions
The notations K and ΔR???? are explained in Introductory Remarks. The thermodynamic properties of dilute solution of polyelectrolytes with addition of a neutral salt is determined by two parameters, radius gyration of the molecule and the second virial coefficient A2 , which expresses the interaction between two solute molecules. The former is discussed in Chapter “Radius of Gyration and Intrinsic Viscosity of Linear Polyelectrolytes” in relation to intrinsic viscosity, while the latter is the main subject in this chapter.
2015 John Wiley & Sons, Inc. Published 2015 by John Wiley & Sons, Inc. 21 22 MITSURU NAGASAWA On the other hand, if concentration is high, polymer molecules fully overlap and are entangled with each other. The excluded volume effect disappears because of the entanglement effect, so polymer coils may be in an unperturbed state. The thermodynamic properties of concentrated, nonionic linear polymer solutions with this characteristic feature were clarified by the Flory and Huggins theory [1, 2]. Intermediation between the theories in dilute and concentrated regions had concerned researchers, but the problem was solved by the “scaling concept” presented by de Gennes  and accounted for with profound experimental data by Noda et al.
This discrepancy arises because the activity coefficient of the counter-ion is neglected. If we return to eqs (81) and (86) to introduce the activity coefficient, we have the following equation. 3 (see Chapter “Ion-Binding”), we may be able to provide an explanation for the big discrepancy between theory and experiments. In the discussion on the Donnan membrane equilibrium, it is important to remember that the polyelectrolyte concentration is so high that the distribution of fixed charges may be assumed to be uniform.
Advances in Chemical Physics, Volume 158: Physical Chemistry of Polyelectrolyte Solutions by Mitsuru Nagasawa