Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 58, Issue -, Pages 244-250Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2014.04.022
Keywords
Chitosan; Sunflower; Bio-based composite; Thermal conductivity; Young modulus
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Funding
- French National Research Agency [ANR-DEMETHER-10-ECOT-004]
- French clusters: Cereales Vallee and Viameca
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This study has for objective the determination of thermal, mechanical and acoustical properties of insulating bio-based composite made with chitosan and sunflower's stalks particles. An experimental design was established to find the size grading of particles, the ratio chitosan/sunflower particles and the stress of compaction influencing the thermal and mechanical properties. Composites with a thermal conductivity (K) of 0.056 W m(-1) K-1, a maximum stress (sigma(max)) of 2 MPa and an acoustic coefficient of absorption (alpha) of 0.2 were obtained with a ratio of chitosan of 4.3% (w/w) and a size grading of particles higher to 3 mm. These mechanical and thermal performances are competitive with those of other insulating bio-based materials available on the market. (C) 2014 Elsevier B.V. All rights reserved.
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