Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites
Javanshour, F.; Ramakrishnan, K. R.; Layek, R. K.; Laurikainen, P.; Prapavesis, A.; Kanerva, M.; Kallio, P.; Van Vuure, A. W.; Sarlin, E. (2021-03)
Javanshour, F.
Ramakrishnan, K. R.
Layek, R. K.
Laurikainen, P.
Prapavesis, A.
Kanerva, M.
Kallio, P.
Van Vuure, A. W.
Sarlin, E.
03 / 2021
106270
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202104203146
https://urn.fi/URN:NBN:fi:tuni-202104203146
Kuvaus
Peer reviewed
Tiivistelmä
The high stiffness and damping properties of flax fibres promote the integration of biocomposites in structural applications. However, the strength of flax/epoxy composites is still limited compared to glass/epoxy composites. Graphene oxide (GO) has proved to be a promising building block for nanocomposites due to its high toughness, stiffness and tunable interfacial interactions with polymers. This study aims to understand the potential of GO-based surface treatment of flax fibres to modify the interfacial adhesion and tensile performance of flax fibre/epoxy composites. GO-modification improves the interfacial shear strength of elementary flax fibre/epoxy by 43%. The interfacial improvement is also established by the 40% higher transverse bending strength compared to untreated flax/epoxy composites. The tensile moduli of GO-modified flax/epoxy composites are on average 2 GPa higher than for untreated flax fibre/epoxy composites in all strain ranges. The quasi-static longitudinal tensile strength of unidirectional composites is not affected by GO-modification.
Kokoelmat
- TUNICRIS-julkaisut [16726]