Eastman’s water dispersible AQ® polyesters are linear, relatively high molecular weight ionomers that are based on isophthalic acid. These polyesters form colloidal dispersions in water that consist of charge stabilized spheres with a diameter of ca. 22 nm. In the presence of 5% n-propanol the colloidal particle partially deaggregates and individual molecules can be observed along with aggregates of approximately 100 molecules. A microgel - like model for the colloidal particle is suggested.


Zeta Potential Colloidal Particle Relative Viscosity Diethylene Glycol Isophthalic Acid 
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  1. 1.
    R. J. Hunter, “Zeta Potential in Colloid Science”, Academic Press, New York, 1981, pp. 192–196.Google Scholar
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    Reference 1, pp. 49.Google Scholar
  3. 3.
    R. W. O’Brien and L. R. White, J. Chem. Soc. Faraday II, 74, 1607 (1978).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • Peter W. Raynolds
    • 1
  1. 1.Research LaboratoriesEastman Chemical CompanyKingsportUSA

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