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Rheological study of biodegradable blends of starch and polyvinyl alcohol

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Abstract

The rheological behavior of biodegradable blends of starch and poly(vinyl alcohol) (PVOH) was measured as a function of temperature, shear rate, and moisture content using a capillary rheometer. An excellent correlation was found with a rheological model which was used as a means to characterize the influence of starch/PVOH content as well as a qualification of the viscosity for simulation studies. This model consisted of a power law dependence on shear rate, an Arrhenius dependence on temperature, and an exponential dependence on moisture.

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Authors and Affiliations

  1. Department of Plastics Engineering, NSF Center for Biodegradable Polymer Research, University of Massachusetts at Lowell, 01854, Lowell, Massachusetts

    X. J. Wang & S. P. McCarthy

  2. Department of Chemistry, NSF Center for Biodegradable Polymer Research, University of Massachusetts at Lowell, 01854, Lowell, Massachusetts

    R. A. Gross

Authors
  1. X. J. Wang
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  2. R. A. Gross
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  3. S. P. McCarthy
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Guest Editor: Dr. Randall Shogren, USDA.

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Wang, X.J., Gross, R.A. & McCarthy, S.P. Rheological study of biodegradable blends of starch and polyvinyl alcohol. J Environ Polym Degr 3, 161–167 (1995). https://doi.org/10.1007/BF02068467

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  • DOI: https://doi.org/10.1007/BF02068467

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