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Temperature dependence of the viscosity of highly starch-filled poly(hydroxy ester ether) biodegradable composites

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Abstract

 The temperature dependence of the viscosity of starch-filled poly(hydroxy ester ether) (PHEE) biodegradable composites was analyzed using Arrhenius and WLF equations. Corn starch/PHEE materials were extruded using a twin screw extruder with starch volume fractions from 0.27 to 0.66. Dynamic strain sweep measurements were carried out at 10 rad/s at six different temperatures from 100 °C to 150 °C. Both Arrhenius and WLF equations model equally well the temperature effect on viscosity of PHEE and starch/PHEE composites with starch volume fractions up to 0.36. Arrhenius equation with stress correction describes the stress dependence of viscosity of starch/PHEE composites with higher starch volume fractions. The activation energy using both Arrhenius equation and Arrhenius equation with stress correction is 62.7 kJ/mol for pure PHEE and starch/PHEE composites.

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Authors and Affiliations

  1. Plant Polymer Research Unit National Center for Agricultural Utilization Research, USDA-ARS 1815 N. University St., Peoria, IL 61604 e-mail: willetjl@mail.ncaur.usda.gov, , , , ,

    Genwen Zhou & Julious L. Willett

  2. Biomaterials Processing Research Unit National Center for Agricultural Utilization Research, USDA-ARS 1815 N. University St., Peoria, IL 61604, , , , ,

    Craig J. Carriere

Authors
  1. Genwen Zhou
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  2. Julious L. Willett
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  3. Craig J. Carriere
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Received: 10 September 1999 Accepted: 27 March 2000

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Zhou, G., Willett, J. & Carriere, C. Temperature dependence of the viscosity of highly starch-filled poly(hydroxy ester ether) biodegradable composites. Rheol. Acta 39, 601–606 (2000). https://doi.org/10.1007/s003970000096

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  • DOI: https://doi.org/10.1007/s003970000096

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