Comparison of composites made from fungal defibrated hemp with composites of traditional hemp yarn

Abstract

Aligned epoxy-matrix composites were made from hemp fibres defibrated with the fungi Phlebia radiata Cel 26 and Ceriporiopsis subvermispora previously used for biopulping of wood. The fibres produced by cultivation of P. radiata Cel 26 were more cellulose rich (78%, w/w) than water-retted hemp due to more degradation of pectin and lignin. The defibrated hemp fibres had higher fibre stiffness (88-94 GPa) than the hemp yarn (60 GPa), which the fibre twisting in hemp yam might explain. Even though mild processing was applied, the obtained fibre strength (643 MPa) was similar to the strength of traditionally produced hemp yam (677 Wa). The fibre strength and stiffness properties are derived from composite data using the rule of mixtures model. The fibre tensile strength increased linearly with cellulose content to 850 MPa for pure cellulose. The fibre stiffness increased also versus the cellulose content and cellulose crystallinity and reached a value of 125 GPa for pure crystalline cellulose. (c) 2006 Elsevier B.V. All rights reserved

Published in

Industrial Crops and Products
2007, Volume: 25, number: 2, pages: 147-159 Publisher: ELSEVIER SCIENCE BV

SLU Authors

• Daniel, Geoffrey

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Forest Science


Publication identifier

DOI: https://doi.org/10.1016/j.indcrop.2006.08.002

Permanent link to this page (URI)

https://res.slu.se/id/publ/10147