Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Realizing the theoretical stiffness of graphene in composites through confinement between carbon fibers

Chu, J., Young, R.J., Slater, T.J.A. ORCID:, Burnett, T.L., Coburn, B., Chichignoud, L., Vuilleumier, A. and Li, Z. 2018. Realizing the theoretical stiffness of graphene in composites through confinement between carbon fibers. Composites Part A: Applied Science and Manufacturing 113 , pp. 311-317. 10.1016/j.compositesa.2018.07.032

[thumbnail of 1-s2.0-S1359835X18303026-main.pdf] PDF - Published Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB)


It is shown that approximately 2 wt% of graphene in the matrix of a unidirectionally-reinforced carbon fiber epoxy composite leads to a significant enhancement in mechanical properties. Particularly, it is found that the axial stiffness of the composites is increased by ∼10 GPa accompanied by an increase in axial strength of 200 MPa. X-ray computed tomography and polarized Raman spectroscopy have demonstrated that the graphene is predominately aligned parallel to the carbon fibers axes. Stress-induced Raman band shifts showed that the confined and self-aligned graphene is subjected to high levels of stress during axial deformation of the composite, with an effective Young's modulus of ∼825 GPa, approaching its theoretical value of 1050 GPa. This behavior has been modeled using the rule of mixtures and shear-lag analysis and it is demonstrated that highly-aligned graphene in a constrained environment between fibers gives significantly better mechanical reinforcement than graphene in conventional polymer-based nanocomposites.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Additional Information: This is an open access article under the CC-BY-NC-ND 4.0 International (CC BY-NC-ND 4.0).
Publisher: Elsevier
ISBN: 1359835X
ISSN: 1359-835X
Date of First Compliant Deposit: 7 March 2022
Date of Acceptance: 25 July 2018
Last Modified: 23 May 2023 23:00

Citation Data

Cited 22 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics