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Application of Scattering Methods to the Dynamics of Polymer Systems pp 80–82Cite as

Exponential and non-exponential relaxation and early state of spinodal decomposition in polymer blends by SANS

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Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 91))

Abstract

With neutron small-angle scattering it was found, for two different polymer blends, that the time-dependent structure factor S(Q, t) relaxes exponentially or also non-exponentially after a temperature step has been applied. The classical Cahn-Hilliard-Cook theory predicts an exponential time behaviour of S(Q, t). The observed deviations may be due to the correlation of the order parameter with internal motions of the polymer segments or with other internal variables of a viscoelastic material near its glass transition.

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Authors and Affiliations

  1. Forschungszentrum Jülich GmbH Institut für Festkörperforschung, Postfach 19 13, D-W-5170, Jülich, FRG

    D. Schwahn, S. Janßen & T. Springer

Authors
  1. D. Schwahn
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  2. S. Janßen
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  3. T. Springer
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Editor information

B. Ewen E. W. Fischer G. Fytas

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© 1993 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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Schwahn, D., Janßen, S., Springer, T. (1993). Exponential and non-exponential relaxation and early state of spinodal decomposition in polymer blends by SANS. In: Ewen, B., Fischer, E.W., Fytas, G. (eds) Application of Scattering Methods to the Dynamics of Polymer Systems. Progress in Colloid & Polymer Science, vol 91. Steinkopff. https://doi.org/10.1007/BFb0116463

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  • DOI: https://doi.org/10.1007/BFb0116463

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-0952-8

  • Online ISBN: 978-3-7985-1678-6

  • eBook Packages: Springer Book Archive

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