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Thermally induced chain orientation for improved thermal conductivity of P(VDF-TrFE) thin films

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Abstract

The potential for polymer thin films to be used as coatings or dielectrics is limited by their low thermal conductivity, κ. However, there have been very limited studies on κ enhancement for polymer thin films. In this work, we show that the out-of-plane κ of a poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) thin film can be enhanced when it undergoes the appropriate thermal annealing conditions. When the film is annealed above its melting temperature, we achieve a 300–400% increase in κ across the measured temperature range, compared to the as-cast film. We attribute this enhancement to the extensive ordering of polymer backbone chains perpendicular to the substrate during the melt-recrystallization process.

Graphical abstract: Thermally induced chain orientation for improved thermal conductivity of P(VDF-TrFE) thin films

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Publication details

The article was received on 20 Jul 2017, accepted on 29 Sep 2017 and first published on 29 Sep 2017


Article type: Paper
DOI: 10.1039/C7TC03240D
Citation: J. Mater. Chem. C, 2017, Advance Article
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    Thermally induced chain orientation for improved thermal conductivity of P(VDF-TrFE) thin films

    J. Zhao, A. C. Tan and P. F. Green, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC03240D

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