Unified analysis of thermodynamic and rheological properties of high polymer solutions. I: Binary systems.

T. S. GRIGERA; I. M. IRURZUN; S. CORTIZO; R. V. FIGINI; M. MARX FIGINI

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS

JOHN WILEY & SONS INC

Año: 2002 vol. 40 p. 290 - 301

0887-6266

We present a comprehensive experimental study of thermodynamic and rheological properties of semidilute polymer solutions in good solvent. Osmotic pressure and viscosity measurements have been done in several polymer-solvent systems at different temperatures. A renormalization group technique was applied to analyze the data using de Gennes´s blobs model to connect dynamic and conformational quantities. The behavior of polymer systems in the whole range from dilute to semidilute solutions can be satisfactorily described using only a few nonuniversal quantities experimentally determined. An adequate agreement between experiments and theory was found, showing universal behavior with a system-dependent constant that does not depend on molecular weight or concentration.