Graphene platelets and their polymer composites: fabrication, structure, properties, and applications
Date
2018
Authors
Shi, G.
Araby, S.
Gibson, C.T.
Meng, Q.
Zhu, S.
Ma, J.
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Journal article
Citation
Advanced Functional Materials, 2018; 28(19, article no. 1706705):1-44
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Abstract
Graphene oxide is extensively compounded with polymers toward a wide variety of applications. Less studied are few-layer or multi-layer highly crystalline graphene, both of which are herein named as graphene platelets. This article aims to provide the most recent advancements of graphene platelets and their polymer composites. A first focus lies on cost-effective fabrication strategies of graphene platelets - intercalation and exfoliation - which work in a relative mass scale, e.g., 5.3 g h -1 . As no heavy oxidization is involved, the platelets have high crystalline integrity, e.g., C:O ratio over 8.0, with thicknesses 2-4 nm and lateral dimension up to a few micrometers.
Through carefully selecting the solvent for dispersion and the molecules for surface modification, graphene platelets can be liquid-processable, enabling them to be printed, coated, or compounded with various polymers. A purpose-designed experiment is undertaken to unravel the effect of reasonable ultrasonication time on the platelet thickness. Typical polymer/graphene platelet composites are critically examined for their preparation, structure, and applications such as thermal management and flexible/stretchable electronic devices. Perspectives on the limitations, current challenges, and future prospects for graphene platelets and their polymer composites are provided.
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Data source: Figures, https://doi.org/10.1002/adfm.201706705
Link to a related website: https://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1002/adfm.201706705, Open Access via Unpaywall
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Copyright 2018 WILEY-VCH Verlag