Recent advances in graphene based polymer composites

Graphene has emerged as a subject of enormous scientific interest due to its exceptional electron transport, mechanical properties, and high surface area. When incorporated appropriately, these atomically thin carbon sheets can significantly improve physical properties of host polymers at extremely small loading. We first review production routes to exfoliated graphite with an emphasis on top-down strategies starting from graphite oxide, including advantages and disadvantages of each method. Then solvent- and melt-based strategies to disperse chemically or thermally reduced graphene oxide in polymers are discussed. Analytical techniques for characterizing particle dimensions, surface characteristics, and dispersion in matrix polymers are also introduced. We summarize electrical, thermal, mechanical, and gas barrier properties of the graphene/polymer nanocomposites. We conclude this review listing current challenges associated with processing and scalability of graphene composites and future perspectives f...

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Graphene/Polymer Nanocomposites

This review is designed to be a comprehensive source for polymer nanocomposite research, including fundamental structure/property relationships, manufacturing techniques, and applications of polymer nanocomposite materials. In addition to presenting the scientific framework for the advances in polymer nanocomposite research, this review focuses on the scientific principles and mechanisms in relation to the methods of processing and manufacturing with a discussion on commercial applications and health/safety concerns (a critical issue for production and scale-up). Hence, this review offers a comprehensive discussion on technology, modeling, characterization, processing, manufacturing, applications, and health/safety concerns for polymer nanocomposites.

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Review article: Polymer-matrix Nanocomposites, Processing, Manufacturing, and Application: An Overview

https://tore.tuhh.de/bitstream/11420/394/1/Article_5._free.pdf

A review and analysis of electrical percolation in carbon nanotube polymer composites

Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites

We examine the percolation threshold for composites made by dispersing anisometric, single-crystal graphite flakes in either an epoxy resin or a polyurethane polymer matrix. Analysis is based on empirical and excluded-volume approaches and the results are compared with a similar treatment using literature data of carbon-fiber based composites. \textcopyright{} 1996 The American Physical Society.

M. Dufort

Papers

Critical concentration in percolating systems containing a high-aspect-ratio filler

Composites based on micron-sized exfoliated graphite particles: Electrical conduction, critical exponents and anisotropy

Anisotropic percolation in an epoxy - graphite disc composite