Michael P. Weir
Extrinsic Wrinkling and Single Exfoliated Sheets of Graphene Oxide in Polymer Composites
Weir, Michael P.; Johnson, David W.; Boothroyd, Stephen C.; Savage, Rebecca C.; Thompson, Richard L.; Parnell, Steven R.; Parnell, Andrew J.; King, Stephen M.; Rogers, Sarah E.; Coleman, Karl S.; Clarke, Nigel
Authors
David W. Johnson
Stephen C. Boothroyd
Rebecca C. Savage
Dr Richard Thompson r.l.thompson@durham.ac.uk
Associate Professor
Steven R. Parnell
Andrew J. Parnell
Stephen M. King
Sarah E. Rogers
Professor Karl Coleman k.s.coleman@durham.ac.uk
Academic Visitor
Nigel Clarke
Abstract
We study the conformation of graphene oxide as the filler in nanocomposites of polystyrene and poly(methyl methacrylate) using inverse-space scattering techniques and atomic force microscopy. By subtracting the polymer scattering to estimate the scattering contribution from the graphene oxide, we discover surface fractal scattering that spans a range of more than two decades in reciprocal space, indicating that the graphene oxide within these materials is rough on a very wide range of length scales and implying extensive extrinsic wrinkling and folding. We discover that well-exfoliated, locally flat sheets of graphene oxide produce a crossover in the scattering at a length scale of 16 nm, which becomes dominated by the signature of mass fractal scattering from thin disks or sheets. We show that the local graphene oxide structure in these polymer–graphene oxide nanocomposites is identical to that of graphene oxide in a water solution studied on the same length scale. Our results confirm the presence of well-exfoliated sheets that are key to achieving high interfacial areas between polymers and high aspect ratio filler in nanocomposites.
Citation
Weir, M. P., Johnson, D. W., Boothroyd, S. C., Savage, R. C., Thompson, R. L., Parnell, S. R., …Clarke, N. (2016). Extrinsic Wrinkling and Single Exfoliated Sheets of Graphene Oxide in Polymer Composites. Chemistry of Materials, 28(6), 1698-1704. https://doi.org/10.1021/acs.chemmater.5b04502
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 4, 2016 |
Online Publication Date | Mar 4, 2016 |
Publication Date | Mar 22, 2016 |
Deposit Date | Mar 21, 2016 |
Publicly Available Date | Mar 4, 2017 |
Journal | Chemistry of Materials |
Print ISSN | 0897-4756 |
Electronic ISSN | 1520-5002 |
Publisher | American Chemical Society |
Peer Reviewed | Peer Reviewed |
Volume | 28 |
Issue | 6 |
Pages | 1698-1704 |
DOI | https://doi.org/10.1021/acs.chemmater.5b04502 |
Public URL | https://durham-repository.worktribe.com/output/1416459 |
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Copyright Statement
ACS AuthorChoice - This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
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