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

Abstract

Out of the three methods of plastic waste recycling, that is, polymer recycling, feedstock recycling, and energy recovery, the former is the most desirable. The polymer recycling usually involves: segregation, washing, shredding and extruding. During melt-extrusion, the material undergoes devolatilization, stabilization, compatibilization, alloying, filtering and pelletization. The alloying, blending, and compounding are the basic ABC processing steps of the technology for polymer recycling. Hence, this chapter summarizes these elements of blending technology that are pertinent for polymer recycling in three parts: (i) thermodynamics of polymer blends, (ii) flow behavior of polymers and their blends, and (iii) compounding and processing of polymer blends.

The first part provides a brief outline of the principal aspects of the thermodynamics (miscibility and interfacial properties) and compatibilization (either by addition of a compatibilizer, by reactive or mechanical compatibilization). The second part focuses on melt rheology — the flow behavior of multicomponent, polymeric systems (including the fundamental principles of the morphology modeling). The third part summarizes the basics of mixing, blending, alloying, and compounding methods, as well as it outlines the principles of morphology modeling. Since compatibilization and development of blends’ morphology are topics of other chapters in this book, these topics are only outlines to provide proper image of the technology.

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Utracki, L.A. (1998). Polymer Blends’ Technology for Plastics Recycling. 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_8

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  • DOI: https://doi.org/10.1007/978-94-017-1626-0_8

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-5074-8

  • Online ISBN: 978-94-017-1626-0

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