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Conduction Transportation From Graphene to an Insulative Polymer Medium: A Novel Approach for the Conductivity of Nanocomposites Publisher



Zare Y1 ; Munir MT2 ; Rhee KY3 ; Park SJ4
Authors
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Authors Affiliations
  1. 1. Biomaterials and Tissue Engineering Research Group, Department of Interdisciplinary Technologies, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
  2. 2. College of Engineering and Technology, American University of the Middle East, Egaila, 54200, Kuwait
  3. 3. Department of Mechanical Engineering (BK21 Four), College of Engineering, Kyung Hee University, Yongin, South Korea
  4. 4. Department of Chemistry, Inha University, Incheon, 22212, South Korea

Source: Nanotechnology Reviews Published:2024


Abstract

Some models have been proposed for the electrical conductivity of graphene-filled nanocomposites, but they have not reflected the characteristics of an imperfect interphase surrounding the graphene nanosheets. In this article, the size and conductivity of an imperfect interphase are used to develop a model for conductivity of the graphene/polymer system. Also, Y,the degree of conduction transfer through an imperfect interphase, is expressed as graphene dimensions and interphase conductivity to define the effective converse aspect ratio and effective filler portion in the samples. The developed model for nanocomposite conductivity is examined by the experimental data of some samples. Furthermore, the influences of various factors on Y,percolation onset, and nanocomposite conductivity are investigated. Thin and large nanosheets, poor filler conductivity, and high interphase conductivity produce a high Y.Likewise, Yand graphene volume portion (φ f) significantly govern the conductivity of samples. Y = 9 and φ f} = 0.03 yield the highest nanocomposite conductivity of 16 S/m, while Y < 2 or φ f} < 0.022 cannot improve the conductivity of samples. © 2024 the author(s), published by De Gruyter.
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