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Graphene Oxide−Polyelectrolyte Nanomembranes
Abstract
Owing to its remarkable electrical, thermal, and mechanical properties, graphene, an atomic layer of carbon, is considered to be an excellent two-dimensional filler for polymer nanocomposites with outstanding mechanical strength along with the potential for excellent electrical and thermal properties. One of the critical limitations with conventional fillers is that the loading fraction required for achieving significant improvement in mechanical properties is relatively high, frequently reaching 50% for maximum strength. Here, we demonstrate that the mechanical properties of ultrathin laminated nanocomposites can be significantly enhanced by the incorporation of small amounts of a dense monolayer of planar graphene oxide (GO) flakes. Negatively charged functionalized graphene oxide layers were incorporated into polyelectrolyte multilayers (PEMs) fabricated in a layer-by-layer (LbL) assembly via Langmuir-Blodgett (LB) deposition. These LbL-LB graphene oxide nanocomposite films were released as robust freely standing membranes with large lateral dimensions (centimeters) and a thickness of around 50 nm. Micromechanical measurements showed enhancement of the elastic modulus by an order of magnitude, from 1.5 GPa for pure LbL membranes to about 20 GPa for only 8.0 vol % graphene oxide encapsulated LbL membranes. These tough nanocomposite PEMs can be freely suspended over large (few millimeters) apertures and sustain large mechanical deformations.
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Cites
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Cited by
Graphene-based polymer nanocomposites
Potts, J. R., Dreyer, D. R., Bielawski, C. W., & Ruoff, R. S. (2011) · Polymer · doi:10.1016/j.polymer.2010.11.042 · Cited by 3,123
The mechanics of graphene nanocomposites: A review
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Graphene-polymer nanocomposites for structural and functional applications
Hu, K., Kulkarni, D. D., Choi, I., & Tsukruk, V. V. (2014) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2014.03.001 · Cited by 1,085
Self-citationPolymer Nanocomposites—A Comparison between Carbon Nanotubes, Graphene, and Clay as Nanofillers
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Electrical percolation in graphene–polymer composites
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Ultra‐Robust Graphene Oxide‐Silk Fibroin Nanocomposite Membranes
Hu, K., Gupta, M. K., Kulkarni, D. D., & Tsukruk, V. V. (2013) · Advanced Materials · doi:10.1002/adma.201300179 · Cited by 307
Self-citationMorphology, Crystallinity, and Molecular Weight of Poly(ε-caprolactone)/Graphene Oxide Hybrids
Castilla-Cortázar, I., Vidaurre, A., Marí, B., & Campillo-Fernández, A. J. (2019) · Polymers · doi:10.3390/polym11071099 · Cited by 86
Metadata
- Authors
- Kulkarni, D. D., Choi, I., Singamaneni, S. S., & Tsukruk, V. V.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-07-29
- Volume
- 4
- Issue
- 8
- Pages
- 4667-4676
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2010452088
- Cited by
- 281
- References
- 2
- FWCI
- 10.50
- Type
- journal article
- Language
- en
- Open access
- closed
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
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