4.7 Article

Modified and thermoplastic rapeseed straw xylan: A renewable additive in PCL biocomposites

期刊

INDUSTRIAL CROPS AND PRODUCTS
卷 119, 期 -, 页码 73-82

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2018.03.067

关键词

Rapeseed/canola straw; Xylan; Grafting; Hemicellulose; Biocomposite; Thermoplastic

资金

  1. Swedish research council Formas [2013-844]

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Xylan extracted from rapeseed straw was chemically modified to gain hydrophobic and thermoplastic properties via macroinitiator formation followed by a free radical grafting-from polymerization with octadecyl acrylate. Biocomposites were then prepared by incorporation of 5 or 20% (w/w) rapeseed straw xylan into a poly(epsilon-caprolactone) (PCL) matrix by melt extrusion. The grafted xylan was homogeneously distributed within the biocomposite and reinforced the PCL matrix while at the same time preserving the ability to elongate to tensile strains > 500%. Analogous biocomposites made from unmodified xylan in a PCL matrix resulted in heterogeneous mixtures and brittle tensile properties.

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