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Thermo-optical characterization and thermal properties of graphene-polymer composites: A review

Abstract

Graphene-polymer composites have shown great promise as thermal interface materials to replace more conventional silver-grease thermal pastes. A deeper understanding on their inherent thermal properties irrespective of their interfacial thermal resistivity with other systems is required in order to develop them with a sufficient degree of generality for a host of thermal applications. This also requires that measurements need to be carried out contactlessly. Thermo-optical characterization methods, based on the photothermal effect are extremely valuable contactless techniques for determining the thermal properties of thin-film materials without any need to transfer heat from other media to the sample under investigation. However, they require a careful and often complex modeling procedure to extract thermal properties of the film-substrate-environment system, and the results they provide are too often depending on the specific model used to interpret the measured data. In this article, we offer a review of photothermal and thermo-optical methods, and some of the recent progresses in using them for developing the thermal properties of graphene-polymer composites. We discuss some of the methods of aligning graphene platelets with each other, to improve their directional thermal conductivity, and to understand how thermo-optical pump-probe techniques can be used for characterizing such systems, with PEDOT:PSS-graphene composite systems as working examples.

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Publication details

The article was received on 19 Apr 2017, accepted on 14 Aug 2017 and first published on 14 Aug 2017


Article type: Review Article
DOI: 10.1039/C7TC01719G
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    Thermo-optical characterization and thermal properties of graphene-polymer composites: A review

    R. Bauld, D. W. Choi, P. Bazylewski, R. Divigalpitiya and G. Fanchini, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC01719G

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