Dynamics of semidilute polyelectrolyte solutions

TitleDynamics of semidilute polyelectrolyte solutions
Publication TypeJournal Article
Year of Publication1994
AuthorsM Rubinstein, RH Colby, and AV Dobrynin
JournalPhysical Review Letters
Pagination2776 - 2779
Date Published01/1994

We apply dynamic scaling to both unentangled and entangled semidilute polyelectrolyte solutions. The unentangled semidilute regime can span three to four decades of polymer concentration in low-salt solutions. In this range we predict such phenomena as a concentration independent self-diffusion coefficient, relaxation time that is a decreasing function of concentration c, and explain the empirical Fuoss law for the viscosity η∼c1/2. In the low-salt entangled regime we predict the concentration independent relaxation time and the viscosity η∼c3/2 that are observed experimentally.

Short TitlePhysical Review Letters