Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 125, Issue -, Pages 134-144Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2016.04.003
Keywords
Polypropylene; Biomass; Composites; Fungal degradation
Funding
- International Atomic Energy Agency (IAEA) [17689/2013]
- Romanian UEFISCDI [164/2012 BIONANOMED]
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White-rot fungus Bjerkandera adusta has been tested for its ability to degrade some biocomposites materials based on polypropylene and biomass (Eucalyptus globulus, pine cones, and Brassica rapa). gamma-irradiation was applied to initiate the degradation of relatively inert polypropylene matrix. The degradation process has been studied by scanning electron microscopy, atomic force microscopy, infrared spectroscopy, contact angle measurements, rheological and chemiluminescence tests. These analyses showed that the polypropylene/biomass composites properties are worsen under the action of the selected microorganism. The formation of cracks and scrap particles over the entire matrix surface and the decrease of the complex viscosity values, as well as the dynamic moduli of gamma irradiated PP/biomass composite and exposed to Bjerkandera adusta fungus, indicate fungal efficiency in composite degradation. (C) 2016 Elsevier Ltd. All rights reserved.
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