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Autori: Brunchi C.E., Bercea M., Morariu S.
Editorial: JACS, J. Chem. Eng. Data, 55 (10), p.4399-4405, 2010.
The paper investigates the hydrodynamic properties of binary polymer1,2/solvent solutions in comparison with ternary polymer1/polymer2/solvent mixtures. The experimental data obtained by viscometry have been discussed by means of two methods: first, the plots obtained with the classical Huggins equation are analyzed, and in parallel, an evaluation of the parameters given by the new Wolf model is presented. The experimental data obtained for binary and ternary mixtures fit well with this last method and allow the calculation of intrinsic viscosities and other hydrodynamic parameters, which provide new information about the competition between different types of interactions for polymer mixtures in solution. The compatibility of two polymers dissolved in a common solvent is also discussed on the basis of two parameters, reflecting the interactions between the polymer segments and polymer/polymer miscibility, respectively.
Cuvinte cheie: amestecuri de polimeri, solutii diluate, viscozitate // polymer mixture, dilute solution, viscosity