High-yield Exfoliation of Graphite in Acrylate Polymers: A stable few-layer graphene nanofluid with enhanced thermal conductivity
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Date
2013
Authors
Sun, Zhenyu
Pöller, Sascha
Masa, Justus
Kilzer, Andreas
Journal Title
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Volume Title
Publisher
Carbon
Abstract
High-yield exfoliation of pristine graphite in low boiling point alcohols was achieved using a set of acrylate polymers resulting in few-layer graphene concentrations of up to ∼4 mg mL−1. The polymer showed superior dispersing capabilities for graphene compared to the best reported dispersants, including the solvent N-methyl-pyrrolidone, the surfactants sodium cholate and sodium taurodeoxycholate, and the polymer polyvinylpyrrolidone. The dispersions were stable regardless of freezing (−26 °C) or heating (70 °C) for 24 h, or dilution with water up to 80% volume ratio over 160 h. The as-obtained nanofluid exhibited an enhancement in thermal conductivity suggesting a great potential in coolant applications.
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Citation
Sun, Z., Pöller, S., Huang, X., Guschin, D., Taetz, C., Ebbinghaus, P., ... & Muhler, M. (2013). High-yield exfoliation of graphite in acrylate polymers: A stable few-layer graphene nanofluid with enhanced thermal conductivity. Carbon, 64, 288-294.https://doi.org/10.1016/j.carbon.2013.07.063