By Mitsuru Nagasawa
The Advances in Chemical Physics sequence offers the chemical physics box with a discussion board for severe, authoritative reviews of advances in each sector of the self-discipline. This quantity explores subject matters from Thermodynamic homes of Polyelectrolyte strategies to ion-binding of polyelectrolytes. The ebook features:
- The merely sequence of volumes to be had that provides the leading edge of study in chemical physics
- Contributions from specialists during this box of research
- Representative cross-section of analysis that questions verified considering on chemical solutions
- An editorial framework that makes the ebook a very good complement to a complicated graduate type in actual chemistry or chemical physics
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Additional info for Advances in Chemical Physics, Volume 158: Physical Chemistry of Polyelectrolyte Solutions
Donnan membrane potentials. Open circles denote observed values and broken lines denote calculated values of eqs (82). The solid lines denote the calculated values of eq (92) with activity coefficients of ions. 2. 029 ×10−3 N. The data at three other salt concentrations in between A and E are similar to the aforementioned data. (Reproduced with permission from Ref. . 0 20 04 01 0. 5 Figure 9. (A) Reduced osmotic pressure p∕c versus polymer concentration c (g/100 ml) for sodium pectinate in solutions of NaCl at 20 ∘ C.
Before discussing the theory, however, it may be useful to survey the features of the electrostatic free energy of polyelectrolyte solutions. THERMODYNAMIC PROPERTIES OF POLYELECTROLYTE SOLUTIONS 31 S/A2 4 2 0 0 1 5 10 15 20 25 C/C* Figure 4. Plots of S∕A2 against C∕C∗ in semidilute region. The symbols are the same as in Figure 2. 25. (Reproduced with permission from Ref. . ) 30 S/A2 20 10 0 1 0 1 2 3 log (C/C*) Figure 5. Crossover from semidilute solution to concentrated solution for osmotic pressure.
NaCl concentrations x (mol/l) are indicated in the figure. (Reproduced with permission from Ref. . ) Figure 8 shows examples comparing the observed Donnan membrane potential and eq (82) . The experimental data and calculated values of eq (82) differ greatly. However, the difference can be explained if we p introduce ????Na+ into the activity coefficient for counter-ions A and ????±s into that for Cs by assuming the additivity of counter-ion activity coefficient, which will be discussed in Chapter “Ion-Binding”, Section “Ion-binding of Polyelectrolytes”.
Advances in Chemical Physics, Volume 158: Physical Chemistry of Polyelectrolyte Solutions by Mitsuru Nagasawa