Polyethylene-collagen hydrolizate thermoplastic blends: Thermal and mechanical properties

Authors

  • Domenico Castiello,

    1. Po.Te.Co. Scrl – Polo Tecnologico Conciario, Via Walter Tobagi 30, Castelfranco di Sotto, Pisa 56022, Italy
    Search for more papers by this author
  • Emo Chiellini,

    1. Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications, UdR – INSTM Consortium, Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa 56126, Italy
    Search for more papers by this author
  • Patrizia Cinelli,

    1. Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications, UdR – INSTM Consortium, Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa 56126, Italy
    Search for more papers by this author
  • Salvatore D'Antone,

    1. Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications, UdR – INSTM Consortium, Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa 56126, Italy
    Search for more papers by this author
  • Monica Puccini,

    1. Department of Chemical Engineering, Industrial Chemistry and Material Science, University of Pisa, Pisa 56126, Italy
    Search for more papers by this author
  • Maurizio Salvadori,

    1. Po.Te.Co. Scrl – Polo Tecnologico Conciario, Via Walter Tobagi 30, Castelfranco di Sotto, Pisa 56022, Italy
    Search for more papers by this author
  • Maurizia Seggiani

    Corresponding author
    1. Department of Chemical Engineering, Industrial Chemistry and Material Science, University of Pisa, Pisa 56126, Italy
    • Department of Chemical Engineering, Industrial Chemistry and Material Science, University of Pisa, Pisa 56126, Italy
    Search for more papers by this author

Abstract

Collagen, a natural macromolecular protein from renewable resources, is widely used in many industrial applications. Mixtures of low-density polyethylene (LDPE) with collagen hydrolizate derived from the tannery industry were investigated to assess the feasibility of producing polymeric materials suitable for production of thermoplastic items for applications in packaging and agricultural segments. Different grades of polyethylenes and collagen hydrolizates characterized by different molecular weight and salinity were investigated to develop optimal blends. The physical–chemical properties of the obtained blends were assessed by thermal–mechanical, spectroscopical analysis. Following the ongoing research activity, the reutilization of collagen hydrolizate derived from the leather industry for the production of environmental degradable polyethylene-based thermoplastic films appears feasible and promising. Blends of collagen hydrolizate and LDPE up to 20–30 wt % of collagen hydrolizate allow obtaining slightly opaque, cohesive and flexible films that show satisfactory thermal–mechanical responses. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

Ancillary