Thermal and Electrical Properties of Nanocomposites Based on Self‐Assembled Pristine Graphene

  title={Thermal and Electrical Properties of Nanocomposites Based on Self‐Assembled Pristine Graphene},
  author={Jennifer L. Bento and Elizabeth Brown and Steven J. Woltornist and Douglas H. Adamson},
  journal={Advanced Functional Materials},
Thermodynamically‐driven exfoliation and self‐assembly of pristine graphene sheets is shown to provide thermally and electrically functional polymer composites. The spreading of graphene sheets at a high energy liquid/liquid interface is driven by lowering the overall energy of the system, and provides for the formation of water‐in‐oil emulsions stabilized by overlapping graphene sheets. Polymerization of the oil phase, followed by removal of the dispersed water phase, produces inexpensive and… 

Self-assembled graphene composites for flow-through filtration.

This system provides a continuous approach to water treatment rather than a batch approach, and uses pristine graphene instead of the more costly and environmentally challenging graphene oxide, providing a convenient route to clean the filters by resistive heating.

Pristine Graphene Microspheres by the Spreading and Trapping of Graphene at an Interface.

The interfacial spreading and exfoliation of graphene was used to create low-density, hollow microspheres defined by a thin shell of graphene, which acted as a 2D surfactant to stabilize the dispersed water droplets utilized as polymerization templates.

Thermomechanical Behavior of Polymer Composites Based on Edge-Selectively Functionalized Graphene Nanosheets

The PI/EFG composite films were found to exhibit reinforced thermal and thermo-mechanical properties compared to neat PI owing to the interaction between the EFG and PI matrix.

Wetting‐Induced Climbing for Transferring Interfacially Assembled Large‐Area Ultrathin Pristine Graphene Film

A robust wetting-induced climbing strategy is reported for transferring the interfacially assembled large-area ultrathin pristine graphene film, which would greatly promote the development of solvent-exfoliated pristine nanomaterials from dispersions to macroscopic thin film materials.

Electrical Conductivity of Graphene–Polymer Composite Foams: A Computational Study

We use a combination of the coarse-grained molecular dynamics simulations and finite difference method calculations to study electromechanical coupling in composite polymer/graphene foams. In these

Facile Synthesis of Electrically Conductive and Heatable Nanoparticle/Nanocarbon Hybrid Aerogels.

These findings open up new routes to the functionalization of inorganic nanoparticles and extend their application ranges that involve electrical/thermal heating, temperature-dependent catalysis, sorption, and sensing.

From Graphene-like Sheet Stabilized Emulsions to Composite Polymeric Foams: Molecular Dynamics Simulations

We use coarse-grained molecular dynamics simulations to study the formation of composite polymeric foams made by templated polymerization of emulsions stabilized by graphene sheets (G-sheets) acting

Graphene-induced enhanced anticorrosion performance of waterborne epoxy resin coating

In this work, waterborne epoxy resin E44 and graphene were employed as the matrix and nanofiller, respectively, to construct composite coatings with enhanced anticorrosion performance. XRD pattern

Graphene-induced enhanced anticorrosion performance of waterborne epoxy resin coating

: In this work, waterborne epoxy resin E44 and graphene were employed as the matrix and nano fi ller, respectively, to construct composite coatings with enhanced anticorrosion performance. XRD pattern

Electrically insulating POE/BN elastomeric composites with high through-plane thermal conductivity fabricated by two-roll milling and hot compression

AbstractIn this work, we reported a kind of electrical insulating, highly through-plane thermally conductive polyolefin elastomer (POE)-based composites filled with commercial boron nitride (BN)



Polymer/Pristine Graphene Based Composites: From Emulsions to Strong, Electrically Conducting Foams

The unique electrical, thermal, and mechanical properties of graphene make it a perfect candidate for applications in graphene/graphite based polymer composites, yet challenges due to the lack of

Properties of Pristine Graphene Composites Arising from the Mechanism of Graphene-Stabilized Emulsion Formation

Inexpensive, strong, and electrically conductive pristine graphene composites are synthesized from graphene-stabilized emulsions. These materials do not utilize oxidized graphite (GO) or reduced

Joule Heating Characteristics of Emulsion‐Templated Graphene Aerogels

The Joule heating properties of an ultralight nanocarbon aerogel are investigated with a view to potential applications as energy‐efficient, local gas heater, and other systems. Thermally reduced

Flexible graphene electrothermal films made from electrochemically exfoliated graphite

Graphene nanosheets are facilely prepared by electrochemical exfoliation of graphite in sodium tungstate aqueous solution. Through a filtration-transfer procedure and followed by heat treatment, the

Conductive thin films of pristine graphene by solvent interface trapping.

This work demonstrates the use of an interfacial trapping technique to assemble laterally macroscopic films of pristine graphene that are up to 95% transparent and have long-range structure with conductivities on the order of 400 S/cm.

Thermal properties of graphene and nanostructured carbon materials.

The thermal properties of carbon materials are reviewed, focusing on recent results for graphene, carbon nanotubes and nanostructured carbon materials with different degrees of disorder, with special attention given to the unusual size dependence of heat conduction in two-dimensional crystals.

Aligned carbon nanotube film enables thermally induced state transformations in layered polymeric materials.

Experimental results indicate that the use of an "out-of-oven" A-CNT integrated heater leads to orders of magnitude reductions in the energy required to process polymeric layered structures such as composites.

Thermal transport in three-dimensional foam architectures of few-layer graphene and ultrathin graphite.

At a very low solid concentration, the room-temperature thermal conductivity of freestanding graphene-based foams (GF), comprised of few-layer graphene and ultrathin graphite synthesized through the use of methane chemical vapor deposition on reticulated nickel foams, was increased, revealing the benefit of eliminating internal contact thermal resistance in the continuous GF structure.

Graphene oxide sheets at interfaces.

It is reported that GO is an amphiphile with hydrophilic edges and a more hydrophobic basal plane, and the ease of its conversion to chemically modified graphene could enable new opportunities in solution processing of functional materials.