The true amphipathic nature of graphene flakes: a versatile 2D stabilizer

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dc.contributor.authorKuziel, Anna W.
dc.contributor.authorMilowska, Karolina Z.
dc.contributor.authorChau, Pak‐Lee
dc.contributor.authorBoncel, Slawomir
dc.contributor.authorKoziol, Krzysztof K. K.
dc.date.accessioned2020-07-17T15:27:35Z
dc.date.available2020-07-17T15:27:35Z
dc.date.freetoread2020-07-17
dc.date.issued2020-07-16
dc.description.abstractThe fundamental colloidal properties of pristine graphene flakes remain incompletely understood, with conflicting reports about their chemical character, hindering potential applications that could exploit the extraordinary electronic, thermal, and mechanical properties of graphene. Here, the true amphipathic nature of pristine graphene flakes is demonstrated through wet‐chemistry testing, optical microscopy, electron microscopy, and density functional theory, molecular dynamics, and Monte Carlo calculations, and it is shown how this fact paves the way for the formation of ultrastable water/oil emulsions. In contrast to commonly used graphene oxide flakes, pristine graphene flakes possess well‐defined hydrophobic and hydrophilic regions: the basal plane and edges, respectively, the interplay of which allows small flakes to be utilized as stabilizers with an amphipathic strength that depends on the edge‐to‐surface ratio. The interactions between flakes can be also controlled by varying the oil‐to‐water ratio. In addition, it is predicted that graphene flakes can be efficiently used as a new‐generation stabilizer that is active under high pressure, high temperature, and in saline solutions, greatly enhancing the efficiency and functionality of applications based on this materialen_UK
dc.identifier.citationKuziel AW, Milowska KZ, Chau P-K, et al., (2020) The true amphipathic nature of graphene flakes: a versatile 2D stabilizer. Advanced Materials, Volume 32, Issue 34, August 2020, Article Number 2000608en_UK
dc.identifier.cris27526930
dc.identifier.issn0935-9648
dc.identifier.urihttps://doi.org/10.1002/adma.202000608
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15567
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectstabilizersen_UK
dc.subjectPickering emulsionsen_UK
dc.subjectinterfacial self‐assemblyen_UK
dc.subjectgraphene flakesen_UK
dc.titleThe true amphipathic nature of graphene flakes: a versatile 2D stabilizeren_UK
dc.typeArticleen_UK

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