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Derivation and Validation of Models to Predict the Properties of Mixtures of Virgin and Recycled Polymers

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Frontiers in the Science and Technology of Polymer Recycling

Part of the book series: NATO ASI Series ((NSSE,volume 351))

Abstract

The theoretical basis for the prediction of the properties of mixtures of virgin and reprocessed polymers is presented in this text. The theory is developed using degradation equations, that describe the loss of properties of the polymer as a function of the number of processing cycles. The single pass-property loss concept is also utilized to derive algorithms that can be applied to properties with quite complex decay behaviors. Various degradation equations, corresponding to important properties in materials characterization and quality control, such as melt flow index and tensile and impact strengths, are determined. The effect of reprocessing on the degradation of the fibers length, the molecular weight and the mechanical properties of reinforced thermoplastics is explained with the help of the algorithms derived.

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Author information

Authors and Affiliations

  1. Department of Polymer Engineering, Universidade do Minho, 4800, Guimarães, Portugal

    C. A. Bernardo

Authors
  1. C. A. Bernardo
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Editor information

Editors and Affiliations

  1. Departments of Chem. and Polymer Sci .& Technology, Middle East Technical University, 06531, Ankara, Turkey

    Güneri Akovali (Director, lecturer) (Director, lecturer)

  2. Department of Polymer Engineering, University of Minho, 4800, Guimares, Portugal

    Carlos A. Bernardo (Co-Director, lecturer) (Co-Director, lecturer)

  3. Polymer Tech., Ortec Corp., 2395 Speakman Drive, L5K 1B3, Missisagua, Ontario, Canada

    Jacob Leidner (lecturer) (lecturer)

  4. Industrial Materials Institute, National Research Council of Canada (NRCC), 75 de Mortagne, J4B 6Y4, Boucherville, Quebec, Canada

    Leszek A. Utracki (lecturer) (lecturer)

  5. Polymer Processing Institute at Stevens Institute of Technology, Castle Point on Hudson, 07030, Hoboken, NJ, USA

    Marino Xanthos (lecturer) (lecturer)

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© 1998 Springer Science+Business Media Dordrecht

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Bernardo, C.A. (1998). Derivation and Validation of Models to Predict the Properties of Mixtures of Virgin and Recycled Polymers. In: Akovali, G., Bernardo, C.A., Leidner, J., Utracki, L.A., Xanthos, M. (eds) Frontiers in the Science and Technology of Polymer Recycling. NATO ASI Series, vol 351. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1626-0_11

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  • DOI: https://doi.org/10.1007/978-94-017-1626-0_11

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-5074-8

  • Online ISBN: 978-94-017-1626-0

  • eBook Packages: Springer Book Archive

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