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The Feasibility of Using the MFC Concept to Upcycle Mixed Recycled Plastics

Author

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  • Maja Kuzmanović

    (Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 130, 9052 Zwijnaarde, Belgium)

  • Laurens Delva

    (Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 130, 9052 Zwijnaarde, Belgium)

  • Ludwig Cardon

    (Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 130, 9052 Zwijnaarde, Belgium)

  • Kim Ragaert

    (Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 130, 9052 Zwijnaarde, Belgium)

Abstract

Several mixed recycled plastics, namely, mixed bilayer polypropylene/poly (ethylene terephthalate) (PP/PET) film, mixed polyolefins (MPO) and talc-filled PP were selected for this study and used as matrices for the preparation of microfibrillar composites (MFCs) with PET as reinforcement fibres. MFCs with recycled matrices were successfully prepared by a three-step processing (extrusion—cold drawing—injection moulding), although significant difficulties in processing were observed. Contrary to previous results with virgin PP, no outstanding mechanical properties were achieved; they showed little or almost no improvement compared to the properties of unreinforced recycled plastics. SEM characterisation showed a high level of PET fibre coalescence present in the MFC made from recycled PP/PET film, while in the other MFCs, a large heterogeneity of the microstructure was identified. Despite these disappointing results, the MFC concept remains an interesting approach for the upcycling of mixed polymer waste. However, the current study shows that the approach requires further in-depth investigations which consider various factors such as viscosity, heterogeneity, the presence of different additives and levels of degradation.

Suggested Citation

  • Maja Kuzmanović & Laurens Delva & Ludwig Cardon & Kim Ragaert, 2021. "The Feasibility of Using the MFC Concept to Upcycle Mixed Recycled Plastics," Sustainability, MDPI, vol. 13(2), pages 1-20, January.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:2:p:689-:d:479213
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    References listed on IDEAS

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    1. Dimitris S. Achilias & Eleni V. Antonakou, 2015. "Chemical and Thermochemical Recycling of Polymers from Waste Electrical and Electronic Equipment," Chapters, in: Dimitris S. Achilias (ed.), Recycling Materials Based on Environmentally Friendly Techniques, IntechOpen.
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