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Thermodynamically induced shear degradation

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Polymer Physics

Part of the book series: Advances in Polymer Science ((POLYMER,volume 85))

Abstract

The shear degradation of polymers in semiconcentrated solutions is viewed as a function of solvent quality. It is shown that the deterioration of the thermodynamic quality of the solvent leads to a marked flow resistance due to an increasing number of contacts between the chains. This may be probed by viscosimetric measurements as well as by degradation experiments (“thermodynamically induced shear degradation”). For a detailed discussion of this phenomenon the experimental setup for the mechanochemical experiment is outlined first, followed by a survey of the kinetics of chain scission. Finally, experiments mostly obtained on polystyrene in the theta-solvent trans-decalin are discussed. The results of mechanochemical investigations together with those of viscosimetric investigations are shown to provide useful information on polymer dynamics at high shear rates in semiconcentrated solutions.

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Authors and Affiliations

  1. Max-Planck-Institut für Polymerforschung, Postfach 3148, 65 Mainz, FRG

    M. Ballauff

  2. Institut für Physikalische Chemie, Universität Mainz, Welderweg 15, 65 Mainz, FRG

    B. A. Wolf

Authors
  1. M. Ballauff
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  2. B. A. Wolf
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© 1988 Springer-Verlag

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Ballauff, M., Wolf, B.A. (1988). Thermodynamically induced shear degradation. In: Polymer Physics. Advances in Polymer Science, vol 85. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0024049

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