Dynamics properties of polymer solutions (I). Dilute-semidilute transition

Measurements of viscosity and dielectric relaxation were carried out using several solutions of cellulose trinitrate polymer in isophorone in the dilu te and the semidilute regime. In each case, the renormalization group theor y was applied to the data using the De Gennes's blobs model for connecting dynamic and conformational quantities. There was adequate agreement between the experimental results and the theoretical predictions to show universal behavior. The values of beta were independent of both molecular weight and polymer concentration and could be used to describe a variety of dynamic p roperties. These findings suggest that only one scaling variable is necessa ry for such purposes. (C) 1999 Elsevier Science Ltd. All rights reserved.