Characterizing interfacial thermal conductivity in graphene nanocomposites

Po Ying Tseng, Wen Jie Ke, Jia Lin Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study investigated the functionalization and layer number effects on interfacial thermal conductivity (ITC) of graphene nanocomposites through molecular dynamics simulation. The functional groups grafted to the graphene surface were carboxyl and amine groups. The ITC between the graphene and the surrounding epoxy matrix was examined, and the effects of the functional groups and layer number on ITC were characterized through vibrational density of states (VDOS). It was revealed that the VDOS mismatch between the epoxy and the outermost layer of graphene was reduced by the functional groups. Thus, the functional groups can effectively improve the ITC between the graphene and epoxy matrix. Moreover, when the layer number of graphene increases, the ITC in nanocomposites increases correspondingly. This is attributed to the fact that the inner layers of graphene may interact with the epoxy matrix and contribute the interatomistic energy in the interface.

Original languageEnglish
Title of host publicationNano Engineering and Materials Technologies IV
EditorsHao Gong, Kazuo Umemura
PublisherTrans Tech Publications Ltd
Pages197-203
Number of pages7
ISBN (Print)9783035715873
DOIs
StatePublished - 2020
Event8th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2019 and 4th International Conference on Materials Technology and Applications, ICMTA 2019 - Kyoto, Japan
Duration: 11 Oct 201914 Oct 2019

Publication series

NameMaterials Science Forum
Volume990 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference8th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2019 and 4th International Conference on Materials Technology and Applications, ICMTA 2019
CountryJapan
CityKyoto
Period11/10/1914/10/19

Keywords

  • Graphene
  • Interfacial thermal conductivity
  • Nanocomposites

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  • Cite this

    Tseng, P. Y., Ke, W. J., & Tsai, J. L. (2020). Characterizing interfacial thermal conductivity in graphene nanocomposites. In H. Gong, & K. Umemura (Eds.), Nano Engineering and Materials Technologies IV (pp. 197-203). (Materials Science Forum; Vol. 990 MSF). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.990.197