Dielectric relaxation in aqueous solutions of polymers

  • Udo Kaatze
Polymere Und Deren Lösungen
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 65)


Complex permittivity measurements on aqueous solutions of non-ionic linear heterohydrocarbon polymers are summarized. The solutes include poly (ethylene oxide), poly (vinyl alcohol), poly (vinyl methyl ether), poly (ethylene imine), poly (acrylamide), poly (methacrylamide), and poly (vinyl pyrrolidone). The measured dependence of the complex permittivity on frequency is discussed in terms of a model of the solutions to yield the hydration number and reorientation time of disturbed water molecules as well as the relaxation time and the molar dielectric increment of the solutes. The hydration water data are compared to those of oligomers and of small organic molecules for the purpose of gaining insight into the effect of molecular size, shape, and flexibility on the dynamics of the surrounding water. The molar dielectric increment of the solutes is analyzed to show that with the polymers there is some hindrance of the motions of polar components as compared to a free rotation within the chain backbone. With the poly (ethylene imine) solutions an additional contribution to the complex permittivity is suggested which seems to reflect the diffusive axial motions of OH counterions along the weakly protonated polymer chains.


Ethylene Oxide Monomer Unit Dielectric Relaxation Complex Permittivity Hydration Water 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1).
    Kaatze, U., Adv. Molec. Relaxation Processes 7, 71 (1975).CrossRefGoogle Scholar
  2. 2).
    Kaatze, U., O. Göttmann, R. Podbielski, R. Pottel, and U. Terveer, J. Phys. Chem., 82, 112 (1978).CrossRefGoogle Scholar
  3. 3).
    Göttmann, O., U. Kaatze, R. Podbielski, R. Pottel, to be published.Google Scholar
  4. 4).
    Pottel, R., K. Giese, and U. Kaatze, Dielectric Relaxation in Aqueous Solutions, in: Structure of Water and Aqueous Solutions, W. A. P. Luck, ed. (Weinheim, 1974).Google Scholar
  5. 5).
    Cole, K. S. and R. H. Cole, J. Chem. Phys. 9, 341 (1941).CrossRefGoogle Scholar
  6. 6).
    Pottel, R. and U. Kaatze, to be published.Google Scholar
  7. 7).
    Kaatze, U., Ber. Bunsenges. physik. Chem., to be published 1978.Google Scholar
  8. 8).
    Kaatze, U. and W.-Y. Wen, J. Phys. Chem., 82, 109 (1978).CrossRefGoogle Scholar
  9. 9).
    Akerlöf, G. and A. O. Sbort, J. Am. Chem. Soc., 58, 1241 (1936).CrossRefGoogle Scholar
  10. 10).
    Pottel, R. and U. Kaatze, Ber. Bunsenges. physik. Chem. 73, 437 (1969).Google Scholar
  11. 11).
    Pottel, R., D. Adolph, and U. Kaatze, Ber. Bunsenges. physik. Chem. 79, 278 (1975).Google Scholar
  12. 12).
    Hasted, J. B., G. H. Haggis, and P. Hutton, Trans. Faraday Soc. 47, 577 (1951).CrossRefGoogle Scholar
  13. 13).
    Kaatze, U., C. H. Limberg, and R. Pottel, Ber. Bunsenges. physik. Chem. 78, 555 (1974).Google Scholar
  14. 14).
    Wen, W.-Y. and U. Kaatze, J. Phys. Chem. 81, 177 (1977).CrossRefGoogle Scholar
  15. 15).
    Davies, M., G. Williams, and G. D. Loveluck, Z. Elektrochem. 64, 575 (1960).Google Scholar
  16. 16).
    Price, A. H., “The Permittivity of Liquids” in “Dielectric Properties and Molecular Behaviour”, N. E. Hill, W. E. Vaughan, A. H. Price, M. Davies, eds. (London, 1969).Google Scholar
  17. 17).
    D'Ans-Lax, Taschenbuch für Chemiker und Physiker, K. Schäfer and C. Synowietz, eds. (Berlin, 1970), Vol. 3.Google Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1978

Authors and Affiliations

  • Udo Kaatze
    • 1
  1. 1.Drittes Physikalisches InstitutUniversität GöttingenGöttingen

Personalised recommendations