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Determination of thermodynamic parameters of polymer-solvent systems by light scattering

✍ Scribed by Th.G. Scholte

Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
520 KB
Volume
6
Category
Article
ISSN
0014-3057

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✦ Synopsis

From the intensities of light scattered from dilute and concentrated solutions of a given polymer, the chemical potential of the polymer and the solvent can be determined.

Experiments have been carried out with solutions of monodisperse polystyrenes of different molecular weights in a poor solvent (cyclohexane) and in a good solvent (toluene) at different temperatures and at concentrations up to 30 per cent by weight. For all concentrations, the interaction parameter X appears to be slightly dependent on the molecular weight. The results are compared with those determined by equilibrium ultracentrifugation and critical miscibility measurements.

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