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Proceedings Paper

Brillouin spectroscopy investigations of poly(ethylene glycol) water and organic solvent mixtures
Author(s): Mikołaj Pochylski; Zdzisław Błaszczak
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Paper Abstract

Brillouin spectroscopy has been applied to study a synthetic polymer and its solutions in polar and nonpolar solvents. Of particular interest has been the effect of concentration, temperature and polarity of the solvent on the mechanical properties of the mixtures studied. The experimental methods applied permitted investigation of the structural relaxation process related to the dynamics of changes in the internal structure of the polymer chains. It has been shown that the quantitative analysis of the relaxation process can be made in terms of the model based on the theory of viscoelasticity of liquids. The association processes in the systems studied have been analysed assuming the Natta-Baccaredda model. The model has been shown to be successfully applicable for description of mixtures of the polymers interacting with solvents. The limitations of the model in the situation when one of the components of the solution is neutral, while the other one undergoes strong self-association, has been considered.

Paper Details

Date Published: 23 January 2007
PDF: 10 pages
Proc. SPIE 6598, Laser Technology VIII: Applications of Lasers, 65980X (23 January 2007); doi: 10.1117/12.726588
Show Author Affiliations
Mikołaj Pochylski, Adam Mickiewicz Univ. (Poland)
Zdzisław Błaszczak, Adam Mickiewicz Univ. (Poland)

Published in SPIE Proceedings Vol. 6598:
Laser Technology VIII: Applications of Lasers

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