Hydrodynamic Radius of Polystyrene in Binary Solvents near the Theta State

  • Samran Lacharojana
  • David Caroline
Part of the Nato Advanced Study Institutes Series book series (NSSB, volume 23)


The diffusion coefficient D of polystyrene has been measured in a mixed solvent of carbon tetrachloride and methanol for three solvent compositions where the polymer is close to the theta (unperturbed) state; the CCl4 volume fractions ϕ of the solvent were 0.815, 0.8025 and 0.790. The measurements were made as a function of polymer molecular weight M (from 33000 to 106) and polymer concentration (up to 10 mg/ml) using photon-correlation spectroscopy.


Carbon Tetrachloride Polymer Concentration Intrinsic Viscosity Hydrodynamic Radius Infinite Dilution 
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  1. 1.
    A. Dondos and H. Benoit, Makromol Chem. 133, 119 1970.CrossRefGoogle Scholar
  2. 2.
    H. Yamakawa, “Modern Theory of Polymer Solutions”, Harper and Row, New York, N.Y., 1971.Google Scholar

Copyright information

© Springer Science+Business Media New York 1977

Authors and Affiliations

  • Samran Lacharojana
    • 1
  • David Caroline
    • 1
  1. 1.School of Physical and Molecular SciencesUniversity College of North WalesBangor, GwyneddUK

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