Journal article
Comparison of composites made from fungal defibrated hemp with composites of traditional hemp yarn
Bioenergy and Biomass, Biosystems Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Biosystems Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Composites and Materials Mechanics, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark5
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 (88–94GPa) than the hemp yarn (60GPa), which the fibre twisting in hemp yarn might explain. Even though mild processing was applied, the obtained fibre strength (643MPa) was similar to the strength of traditionally produced hemp yarn (677MPa). 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 850MPa for pure cellulose. The fibre stiffness increased also versus the cellulose content and cellulose crystallinity and reached a value of 125GPa for pure crystalline cellulose.
| Language: | English |
|---|---|
| Year: | 2007 |
| Pages: | 147-159 |
| ISSN: | 1872633x and 09266690 |
| Types: | Journal article |
| DOI: | 10.1016/j.indcrop.2006.08.002 |
| ORCIDs: | Thygesen, Anders |
