Flory-Rehner-Donnan equation

Chemical potentials inside the membrane are determined by the Flory-Rehner-Donnan equation of state for one-dimensional swelling (5), since the clamped membrane s area. A, is constant. The polymer-solvent interaction parameter, f, is a linear function of the polymer volume fraction, i.e. J + Xi as proposed by Hirotsu (/ 7). Transport of water into and out of the hydrogel membrane causes its thickness, I, to change at a rate that is proportional to the difference in chemical potential of water between the membrane and Cell I and Cell II. 

---

See also in sourсe #XX -- [ ]

---