Sammanfattning

The objective of this work was to investigate the use of hydrothermal pre-treatment and enzymatic retting to remove non-cellulosic compounds and thus improve the mechanical properties of hemp fibre/epoxy composites. Hydrothermal pre-treatment at 100 kPa and 121 oC combined with enzymatic retting produced fibres with the highest ultimate tensile strength (UTS) of 780 MPa. Compared to untreated fibres, this combined treatment exhibited a positive effect on the mechanical properties of hemp fibre/epoxy composites, resulting in high quality composites with low porosity factor (αpf) of 0.08. Traditional field retting produced composites with the poorest mechanical properties and the highest (αpf) of 0.16. Hydrothermal pretreatment at 100 kPa and subsequent enzymatic retting resulted in hemp fibre composites with the highest UTS of 325 MPa, and stiffness of 38 GPa with 50% fibre volume content, which was 31% and 41% higher, respectively, compared to field retted fibres.

Nyckelord

Natural fibres; Polymer-matrix composites (PMCs); Mechanical properties; Porosity

Publicerad i

Composites Part A: Applied Science and Manufacturing
2016, Volym: 88, sidor: 253-262

SLU författare

• Fernando, Dinesh

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

• Daniel, Geoffrey

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Trävetenskap
Övrig annan teknik


Publikationens identifierare

DOI: https://doi.org/10.1016/j.compositesa.2016.06.003

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/76435