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Increase in Viscosity in Polystyrene Melt at High Rates of Shear

Nature volume 202, pages 288–289 (1964)Cite this article

Abstract

EXTENSIVE results have been published showing the existence of an upper (high shear rate) Newtonian region for dilute polymer solutions1. This has been shown to be of considerable value in characterizing molecular weight distribution. However, because of experimental difficulties, there is little information of this kind which has been obtained on bulk polymer melts of high molecular weight. Master curves of viscosity versus shear rate for a number of these polymers show no evidence of such an effect for at least six shear rate decades of non-Newtonian behaviour2.

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References

  1. Brodnyan, J. G., Gaskins, F. H., and Philippoff, W., Trans. Soc. Rheol., 1, 109 (1951).

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  2. Ballman, R. L., and Simon, R. H. M., J. Polymer Sci. (to be published).

  3. Bueche, F., and Harding, S. W., J. Polymer Sci., 32, 177 (1958).

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Authors and Affiliations

  1. Monsanto Chemical Co., Plastics Division, Springfield, Mass.

    RICHARD L. BALLMAN

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  1. RICHARD L. BALLMAN
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BALLMAN, R. Increase in Viscosity in Polystyrene Melt at High Rates of Shear. Nature 202, 288–289 (1964). https://doi.org/10.1038/202288a0

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