Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites

Farzin Javanshour; K. R. Ramakrishnan; R. K. Layek; Pekka Laurikainen; A. Prapavesis; Mikko Samuli Kanerva; Pasi Kallio; A. W. Van Vuure; Essi Linnea Sarlin

doi:10.1016/j.compositesa.2020.106270

Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites

Farzin Javanshour^*, K. R. Ramakrishnan, R. K. Layek, Pekka Laurikainen, A. Prapavesis, Mikko Samuli Kanerva, Pasi Kallio, A. W. Van Vuure, Essi Linnea Sarlin

^*Corresponding author for this work

Not published at VTT

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46 Citations (Scopus)

Abstract

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.

Original language	English
Article number	106270
Journal	Composites Part A: Applied Science and Manufacturing
Volume	142
DOIs	https://doi.org/10.1016/j.compositesa.2020.106270
Publication status	Published - Mar 2021
MoE publication type	A1 Journal article-refereed

Funding

This project is funded by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 764713 – FibreNet.

Keywords

A. Graphene
A. Natural fibres
B. Fibre/matrix bond
B. Strength

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10.1016/j.compositesa.2020.106270

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Javanshour, F., Ramakrishnan, K. R., Layek, R. K., Laurikainen, P., Prapavesis, A., Kanerva, M. S., Kallio, P., Vuure, A. W. V., & Sarlin, E. L. (2021). Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites. Composites Part A: Applied Science and Manufacturing, 142, Article 106270. https://doi.org/10.1016/j.compositesa.2020.106270

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abstract = "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.",

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author = "Farzin Javanshour and Ramakrishnan, {K. R.} and Layek, {R. K.} and Pekka Laurikainen and A. Prapavesis and Kanerva, {Mikko Samuli} and Pasi Kallio and Vuure, {A. W. Van} and Sarlin, {Essi Linnea}",

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Javanshour, F, Ramakrishnan, KR, Layek, RK, Laurikainen, P, Prapavesis, A, Kanerva, MS, Kallio, P, Vuure, AWV & Sarlin, EL 2021, 'Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites', Composites Part A: Applied Science and Manufacturing, vol. 142, 106270. https://doi.org/10.1016/j.compositesa.2020.106270

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AU - Ramakrishnan, K. R.

AU - Layek, R. K.

AU - Laurikainen, Pekka

AU - Prapavesis, A.

AU - Kanerva, Mikko Samuli

AU - Kallio, Pasi

AU - Vuure, A. W. Van

AU - Sarlin, Essi Linnea

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AB - 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.

KW - A. Graphene

KW - A. Natural fibres

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KW - B. Strength

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JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 106270

ER -

Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites

Abstract

Funding

Keywords

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Interfacial Toughening Strategies for Impact and Fatigue Tolerant Structural Biocomposites

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