Interfacial Stress Transfer in a Graphene Monolayer Nanocomposite

Abstract

Graphene is one of the stiffest known materials, with a Young's modulus of 1 TPa, making it an ideal candidate for use as a reinforcement in high-performance composites. However, being a one-atom thick crystalline material, graphene poses several fundamental questions: (1) can decades of research on carbon-based composites be applied to such an ultimately-thin crystalline material? (2) is continuum mechanics used traditionally with composites still valid at the atomic level? (3) how does the matrix interact with the graphene crystals and what kind of theoretical description is appropriate? We have demonstrated unambiguously that stress transfer takes place from the polymer matrix to monolayer graphene, showing that the graphene acts as a reinforcing phase. We have also modeled the behavior using shear-lag theory, showing that graphene monolayer nanocomposites can be analyzed using continuum mechanics. Additionally, we have been able to monitor stress transfer efficiency and breakdown of the graphene/polymer interface.

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• Mechanical Properties of Graphene Papers
• The deformation of wrinkled graphene
• Stress Transfer Mechanisms at the Submicron Level for Graphene/Polymer Systems
• PMMA-grafted graphene nanoplatelets to reinforce the mechanical and thermal properties of PMMA composites
• Failure Processes in Embedded Monolayer Graphene under Axial Compression
• Phonon and structural changes in deformed Bernal stacked bilayer graphene
• Pseudomagnetic fields in graphene nanobubbles of constrained geometry: A molecular dynamics study
• Wrinkled few-layer graphene as highly efficient load bearer
• Strain Assessment in Graphene Through the Raman 2D' Mode
• Modelling mechanical percolation in graphene-reinforced elastomer nanocomposites
• Anisotropic Strain Induced Soliton Movement Changes Stacking Order and Bandstructure of Graphene Multilayers
• The Strength of Mechanically-Exfoliated Monolayer Graphene
• Stress-transfer from polymer substrates to monolayer and few-layer graphenes
• Button Shear Testing for Adhesion Measurements of 2D Materials
• Stress and charge transfer in uniaxially strained CVD graphene
• Colloidal stabilization of graphene sheets by ionizable amphiphilic block copolymers in various media
• Strain Engineering in Monolayer WS2 and WS2 Nanocomposites
• Stress-strain in electron-beam activated polymeric micro-actuators
• Embedded trilayer graphene flakes under efficient tensile and compressive loading