Prediction of the concentration dependence of diffusion coefficients of polymers in solution

J. W. Qian

Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1

On leave from Zhejiang University, Hangzhou, Peoples Republic of China.

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Alfred Rudin,

Corresponding Author

Alfred Rudin

Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1

Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1===Search for more papers by this author

J. W. Qian,

J. W. Qian

Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1

On leave from Zhejiang University, Hangzhou, Peoples Republic of China.

Search for more papers by this author

Alfred Rudin,

Corresponding Author

Alfred Rudin

Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1

Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1===Search for more papers by this author

First published: March 1989

https://doi.org/10.1002/app.1989.070370720

Citations: 2

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Abstract

The hydrodynamic volumes of solvated polymers shrink with increasing concentrations in solution until a concentration (c_x) is reached at which the effective dimensions are those of a Theta solvent. A simple model (Ref. 7) can be used to calculate the volume fraction of solvated polymer coils as a function of concentration. From this, the concentration dependence of diffusion coefficients can be estimated (Ref. 5). Calculated data are in very good agreement with experimental values except for some lower molecular weight polymers in poor solvents.

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Volume37, Issue7

March 1989

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Prediction of the concentration dependence of diffusion coefficients of polymers in solution

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