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Article

Properties of Graphene-Related Materials Controlling the Thermal Conductivity of Their Polymer Nanocomposites

Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria Campus, Viale Teresa Michel 5, 15121 Alessandria, Italy
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Nanomaterials 2020, 10(11), 2167; https://doi.org/10.3390/nano10112167
Received: 11 October 2020 / Revised: 22 October 2020 / Accepted: 28 October 2020 / Published: 30 October 2020
(This article belongs to the Special Issue Thermal Transport in Nanostructures and Nanomaterials)
Different types of graphene-related materials (GRM) are industrially available and have been exploited for thermal conductivity enhancement in polymers. These include materials with very different features, in terms of thickness, lateral size and composition, especially concerning the oxygen to carbon ratio and the possible presence of surface functionalization. Due to the variability of GRM properties, the differences in polymer nanocomposites preparation methods and the microstructures obtained, a large scatter of thermal conductivity performance is found in literature. However, detailed correlations between GRM-based nanocomposites features, including nanoplatelets thickness and size, defectiveness, composition and dispersion, with their thermal conductivity remain mostly undefined. In the present paper, the thermal conductivity of GRM-based polymer nanocomposites, prepared by melt polymerization of cyclic polybutylene terephtalate oligomers and exploiting 13 different GRM grades, was investigated. The selected GRM, covering a wide range of specific surface area, size and defectiveness, secure a sound basis for the understanding of the effect of GRM properties on the thermal conductivity of their relevant polymer nanocomposites. Indeed, the obtained thermal conductivity appeares to depend on the interplay between the above GRM feature. In particular, the combination of low GRM defectiveness and high filler percolation density was found to maximize the thermal conductivity of nanocomposites. View Full-Text
Keywords: graphene-related materials; polymer nanocomposites; thermal conductivity; thermally conductive polymers; cyclic polybutylene terephthalate oligomers; melt polymerization graphene-related materials; polymer nanocomposites; thermal conductivity; thermally conductive polymers; cyclic polybutylene terephthalate oligomers; melt polymerization
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MDPI and ACS Style

Colonna, S.; Battegazzore, D.; Eleuteri, M.; Arrigo, R.; Fina, A. Properties of Graphene-Related Materials Controlling the Thermal Conductivity of Their Polymer Nanocomposites. Nanomaterials 2020, 10, 2167. https://doi.org/10.3390/nano10112167

AMA Style

Colonna S, Battegazzore D, Eleuteri M, Arrigo R, Fina A. Properties of Graphene-Related Materials Controlling the Thermal Conductivity of Their Polymer Nanocomposites. Nanomaterials. 2020; 10(11):2167. https://doi.org/10.3390/nano10112167

Chicago/Turabian Style

Colonna, Samuele, Daniele Battegazzore, Matteo Eleuteri, Rossella Arrigo, and Alberto Fina. 2020. "Properties of Graphene-Related Materials Controlling the Thermal Conductivity of Their Polymer Nanocomposites" Nanomaterials 10, no. 11: 2167. https://doi.org/10.3390/nano10112167

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