Oxidative degradations of oxodegradable LDPE enhanced with thermoplastic pea starch: Thermo-mechanical properties, morphology, and UV-ageing studies

Authors

  • Jean-Marie Raquez,

    1. Center of Innovation and Research in Materials and Polymers CIRMAP, Laboratory of Polymeric and Composite Materials, University of Mons - UMONS, Académie Universitaire Wallonie-Bruxelles, Place du Parc 20, B-7000 Mons, Belgium
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  • Audrey Bourgeois,

    1. Cosucra Groupe Warcoing S.A., Rue de la Sucrerie 1, B-7740 Warcoing, Belgium
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  • Heidi Jacobs,

    1. Cosucra Groupe Warcoing S.A., Rue de la Sucrerie 1, B-7740 Warcoing, Belgium
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  • Philippe Degée,

    1. Center of Innovation and Research in Materials and Polymers CIRMAP, Laboratory of Polymeric and Composite Materials, University of Mons - UMONS, Académie Universitaire Wallonie-Bruxelles, Place du Parc 20, B-7000 Mons, Belgium
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  • Michael Alexandre,

    1. Materia Nova asbl, Parc Initialis, Avenue N. Copernic 1, B-7000 Mons, Belgium
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  • Philippe Dubois

    Corresponding author
    1. Center of Innovation and Research in Materials and Polymers CIRMAP, Laboratory of Polymeric and Composite Materials, University of Mons - UMONS, Académie Universitaire Wallonie-Bruxelles, Place du Parc 20, B-7000 Mons, Belgium
    2. Materia Nova asbl, Parc Initialis, Avenue N. Copernic 1, B-7000 Mons, Belgium
    • Center of Innovation and Research in Materials and Polymers CIRMAP, Laboratory of Polymeric and Composite Materials, University of Mons - UMONS, Académie Universitaire Wallonie-Bruxelles, Place du Parc 20, B-7000 Mons, Belgium
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Abstract

The abiotic UV-degradation behavior of oxodegradable LDPE was investigated in the presence of thermoplastic pea starch (TPPS) in this study. Oxodegradable LDPE was first melt-blended with thermoplastic pea starch (TPPS) using an internal mixing chamber to enhance the abiotic oxidative degradation of oxodegradable LDPE. Because of their different affinity, maleated polyethylene was added as compatibilizer. Tensile properties, thermal properties, and morphology of resulting melt-blends were determined at different content in TPPS. High content in TPPS (40 wt %) could be readily added to oxodegradable LDPE without affecting the tensile properties of resulting melt-blends. UV-ageing studies on compatibilized TPPS/oxodegradable LDPE melt-blends were carried out by Attenuated Total Reflectance infrared spectroscopy (ATR-FTIR), Dynamic Thermomechanical Analyses (DMTA) and Differential Scanning Calorimetry (DSC) under abiotic conditions. These results suggested a synergistic effect on the UV-ageing of TPPS-based melt-blends provided by both components during the first stage of UV-irradiation. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.

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