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Enzyme Modification of Grain By-products and Their Biocomposites: Characterization, Mechanical and Thermal Properties

Authors

  • Abdullah Al Mamun,

    Corresponding author
    1. Institute of Material Engineering, Polymer Engineering, University of Kassel Mönchebergstrasse- 3, Kassel, Germany
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  • Andrzej Korneliusz Bledzki

    1. Institute of Material Engineering, Polymer Engineering, University of Kassel Mönchebergstrasse- 3, Kassel, Germany
    2. Institute of Materials Science and Engineering, West Pomeranian University of Technology, Szczecin, Poland
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Abstract

Rice husk- and wheat husk (W)-reinforced polylactide composites are fabricated using a high-speed mixer followed by an injection molding process with a fiber load of 40 wt%. Prior to composite production, the husks are modified using a mixture of enzymes. The enzyme modification processing parameters, such as the temperature, duration, and enzyme concentration are optimised. The modified husks are characterised using FT-IR spectroscopy and scanning electron microscopy in order to observe the changes in the fiber surfaces and particle sizes. The moisture absorption properties of modified and unmodified husks are also observed. The following properties of the resulting composites are characterized: tensile, flexural, impact strength, energy absorption, dynamic-mechanical and odor emission properties. The properties of husk-reinforced polylactide composites are compared with those of soft-wood fiber composites.mame201300140-gra-0001

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