Shear exfoliation of graphite into graphene nanoflakes directly within polyetheretherketone and a spectroscopic study of this high modulus, lightweight nanocomposite

Jennifer K. Lynch-Branzoi; Ali Ashraf; Arya Tewatia; Meredith Taghon; Jamie Wooding; Justin Hendrix; Bernard H. Kear; Thomas J. Nosker

doi:10.1016/j.compositesb.2020.107842

Shear exfoliation of graphite into graphene nanoflakes directly within polyetheretherketone and a spectroscopic study of this high modulus, lightweight nanocomposite

Jennifer K. Lynch-Branzoi, Ali Ashraf, Arya Tewatia, Meredith Taghon, Jamie Wooding, Justin Hendrix, Bernard H. Kear, Thomas J. Nosker

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This research demonstrates a general approach to produce graphene enhanced polymer matrix composites (G-PMCs) using in situ shear exfoliation of mined graphite directly within molten thermoplastic polymer. It is found that shear exfoliation of 35 wt % graphite within polyetheretherketone (PEEK) after multipass processing creates graphene nanoflakes (GNFs) that are uniformly distributed and bonded to PEEK, resulting in a nearly 400% increase in tensile modulus. Morphology images show surface crystallization of PEEK on GNF surfaces, very good planar adhesion, and size reduction of GNFs in both the c-axis direction and in diameter due to fracture across the basal plane. Spectroscopic analysis from Raman and XPS spectra indicate in-situ formation of chemical bonding between created GNFs and PEEK. This shear exfoliation melt-mixing method allows high GNF concentration, intimate particle-matrix interaction, in situ functionalization, and provides a platform changing technology for lightweight, stiff PMCs with low raw materials costs, tunable properties, and simple part fabrication methods.

Original language	American English
Article number	107842
Journal	Composites Part B: Engineering
Volume	188
DOIs	https://doi.org/10.1016/j.compositesb.2020.107842
State	Published - May 1 2020
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

Keywords

Mechanical properties
Microstructures
Polymer-matrix composites (PMCs)
Thermoplastic resin

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10.1016/j.compositesb.2020.107842

Cite this

Lynch-Branzoi, J. K., Ashraf, A., Tewatia, A., Taghon, M., Wooding, J., Hendrix, J., Kear, B. H., & Nosker, T. J. (2020). Shear exfoliation of graphite into graphene nanoflakes directly within polyetheretherketone and a spectroscopic study of this high modulus, lightweight nanocomposite. Composites Part B: Engineering, 188, Article 107842. https://doi.org/10.1016/j.compositesb.2020.107842

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title = "Shear exfoliation of graphite into graphene nanoflakes directly within polyetheretherketone and a spectroscopic study of this high modulus, lightweight nanocomposite",

abstract = "This research demonstrates a general approach to produce graphene enhanced polymer matrix composites (G-PMCs) using in situ shear exfoliation of mined graphite directly within molten thermoplastic polymer. It is found that shear exfoliation of 35 wt % graphite within polyetheretherketone (PEEK) after multipass processing creates graphene nanoflakes (GNFs) that are uniformly distributed and bonded to PEEK, resulting in a nearly 400% increase in tensile modulus. Morphology images show surface crystallization of PEEK on GNF surfaces, very good planar adhesion, and size reduction of GNFs in both the c-axis direction and in diameter due to fracture across the basal plane. Spectroscopic analysis from Raman and XPS spectra indicate in-situ formation of chemical bonding between created GNFs and PEEK. This shear exfoliation melt-mixing method allows high GNF concentration, intimate particle-matrix interaction, in situ functionalization, and provides a platform changing technology for lightweight, stiff PMCs with low raw materials costs, tunable properties, and simple part fabrication methods.",

keywords = "Mechanical properties, Microstructures, Polymer-matrix composites (PMCs), Thermoplastic resin",

author = "Lynch-Branzoi, {Jennifer K.} and Ali Ashraf and Arya Tewatia and Meredith Taghon and Jamie Wooding and Justin Hendrix and Kear, {Bernard H.} and Nosker, {Thomas J.}",

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doi = "10.1016/j.compositesb.2020.107842",

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Lynch-Branzoi, JK, Ashraf, A, Tewatia, A, Taghon, M, Wooding, J, Hendrix, J, Kear, BH & Nosker, TJ 2020, 'Shear exfoliation of graphite into graphene nanoflakes directly within polyetheretherketone and a spectroscopic study of this high modulus, lightweight nanocomposite', Composites Part B: Engineering, vol. 188, 107842. https://doi.org/10.1016/j.compositesb.2020.107842

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AU - Lynch-Branzoi, Jennifer K.

AU - Ashraf, Ali

AU - Tewatia, Arya

AU - Taghon, Meredith

AU - Wooding, Jamie

AU - Hendrix, Justin

AU - Kear, Bernard H.

AU - Nosker, Thomas J.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - This research demonstrates a general approach to produce graphene enhanced polymer matrix composites (G-PMCs) using in situ shear exfoliation of mined graphite directly within molten thermoplastic polymer. It is found that shear exfoliation of 35 wt % graphite within polyetheretherketone (PEEK) after multipass processing creates graphene nanoflakes (GNFs) that are uniformly distributed and bonded to PEEK, resulting in a nearly 400% increase in tensile modulus. Morphology images show surface crystallization of PEEK on GNF surfaces, very good planar adhesion, and size reduction of GNFs in both the c-axis direction and in diameter due to fracture across the basal plane. Spectroscopic analysis from Raman and XPS spectra indicate in-situ formation of chemical bonding between created GNFs and PEEK. This shear exfoliation melt-mixing method allows high GNF concentration, intimate particle-matrix interaction, in situ functionalization, and provides a platform changing technology for lightweight, stiff PMCs with low raw materials costs, tunable properties, and simple part fabrication methods.

AB - This research demonstrates a general approach to produce graphene enhanced polymer matrix composites (G-PMCs) using in situ shear exfoliation of mined graphite directly within molten thermoplastic polymer. It is found that shear exfoliation of 35 wt % graphite within polyetheretherketone (PEEK) after multipass processing creates graphene nanoflakes (GNFs) that are uniformly distributed and bonded to PEEK, resulting in a nearly 400% increase in tensile modulus. Morphology images show surface crystallization of PEEK on GNF surfaces, very good planar adhesion, and size reduction of GNFs in both the c-axis direction and in diameter due to fracture across the basal plane. Spectroscopic analysis from Raman and XPS spectra indicate in-situ formation of chemical bonding between created GNFs and PEEK. This shear exfoliation melt-mixing method allows high GNF concentration, intimate particle-matrix interaction, in situ functionalization, and provides a platform changing technology for lightweight, stiff PMCs with low raw materials costs, tunable properties, and simple part fabrication methods.

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Shear exfoliation of graphite into graphene nanoflakes directly within polyetheretherketone and a spectroscopic study of this high modulus, lightweight nanocomposite

Abstract

ASJC Scopus subject areas

Keywords

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