Dynamic of semidilute polymer solution I: Dilute- Semidilute crossover.

I. M. IRURZUN; J. R. GRIGERA; R. V. FIGINI; M. MARX FIGINI

POLYMER

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2000 vol. 41 p. 725 - 731

0032-3861

Measurements of viscosity and dielectric relaxation were carried out using several solutions of cellulose trinitrate polymer in isophorone in the dilute and the semidilute regime. In each case, the renormalization group theory 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 â were independent of both molecular weight and polymer concentration and could be used to describe a variety of dynamic properties. These findings suggest that only one scaling variable is necessary for such purposes.