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Influence of Organophilic Ammonium-Free Nanoclay Incorporation on Mechanical Properties and Biodegradability of Biodegradable Polyester

Authors

  • Reinaldo Y. Morita,

    1. Ioto International Indústria e Comércio de Produtos Aromáticos Ltda (IOTO), Divisão Masterbatches, Estrada do Cerne, 20088, 83535-000 - Campo Magro, PR – Brazil
    2. Universidade Federal do Paraná (UFPR), Centro Politécnico, 81530-900 Curitiba, PR – Brazil
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  • Fábio S. Richart,

    1. Ioto International Indústria e Comércio de Produtos Aromáticos Ltda (IOTO), Divisão Masterbatches, Estrada do Cerne, 20088, 83535-000 - Campo Magro, PR – Brazil
    2. Universidade Federal do Paraná (UFPR), Centro Politécnico, 81530-900 Curitiba, PR – Brazil
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  • Ronilson V. Barbosa,

    1. Universidade Federal do Paraná (UFPR), Centro Politécnico, 81530-900 Curitiba, PR – Brazil
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  • Marilda Munaro,

    1. LACTEC - Instituto de Tecnologia para o Desenvolvimento, Departamento de Materiais, Centro Politécnico, 81531-980 Curitiba, PR – Brazil
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  • Juliana R. Kloss

    1. Ioto International Indústria e Comércio de Produtos Aromáticos Ltda (IOTO), Divisão Masterbatches, Estrada do Cerne, 20088, 83535-000 - Campo Magro, PR – Brazil
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Abstract

Summary: Disposal of petroleum-derived polymers is a growing global environmental problem of alarming proportions, which has increased interest in the use and production of biodegradable materials. In addition to biodegradation, investment in research and development in the nanotechnology area is also significant. This study evaluated the effect of incorporation of an organophilic nanoclay ammonium-free salt (Novaclay™) on the mechanical properties and biodegradation of a biodegradable polyester (Ecoflex®), according to ASTM G 160. Ecoflex with and without incorporated Novaclay was characterized before and after biodegradation in organically enriched soil for up to 180 days, by visual analysis, optical microscopy, weight loss, differential scanning calorimetry, dynamic mechanical analysis, mechanical testing, and scanning electron microscopy. The pure Ecoflex and the Ecoflex/Novaclay nanocomposite were partially biodegraded by the method used, and showed changes in their morphological and mechanical properties.

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