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Graphene Foam Based Composites
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Graphene Foam Based Composites

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (31 January 2021) | Viewed by 4953

Special Issue Editors

Prof. Dr. Arvind Agarwal

E-Mail Website
Guest Editor
Nanomechanics and Nanotribology Laboratory, Florida International University, 10555 West Flagler Street, Miami, FL 33174, USA
Interests: thermal spray; ultrahigh temperature ceramics; nanotube composites; nanoindentation; spark plasma sintering
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Andy Nieto

E-Mail Website
Guest Editor
Naval Postgraduate School, Department of Mechanical & Aerospace Engineering, 699 Dyer Road, Monterey, CA 93943, USA
Interests: nanocomposites; coatings; nanomechanics; tribology; corrosion; T/EBCs
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The advent of carbon nanomaterials has had a profound impact on materials engineering and technology at large, due to the exceptional properties of these materials. Graphene foam is a new class of material that addresses one of the most significant challenges hindering the broad implementation of nanocarbon-reinforced composites—dispersion. Graphene foam presents a unique and intrinsic solution to the problem of nanoparticle dispersion by providing a pre-existing three-dimensional template structure consisting of graphene nanoplatelets.

This Special Issue seeks to present the latest findings in the exciting field of graphene-foam-based composites, including polymer, metal, and ceramic matrix composites. Graphene foam composites have shown exciting properties and potential applications, including de-icing films and coatings, biocompatible scaffolds, electrochemical platforms, and embedded sensors. The fundamental properties of graphene foam composites are still being explored, including deformation mechanisms, transport properties, and the effect of the synthesis route on microstructural evolution.

Prof. Dr. Arvind Agarwal
Prof. Dr. Andy Nieto
Guest Editors

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Keywords

  • Graphene foam synthesis
  • Composite matrix impregnation
  • In situ mechanics
  • Mechanical damping
  • Transport properties
  • Phase stability
  • Electromagnetic interference shielding
  • Separation membranes
  • Biocompatible scaffolds

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Published Papers (1 paper)

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Research

18 pages, 5512 KiB  
Article
A Facile and Scalable Approach in the Fabrication of Tailored 3D Graphene Foam via Freeze Drying
by Tony Thomas and Arvind Agarwal
Materials 2021, 14(4), 864; https://doi.org/10.3390/ma14040864 - 11 Feb 2021
Cited by 16 | Viewed by 4453
Abstract
One of the challenges in the processing of advanced composite materials with 2D reinforcement is their extensive agglomeration in the matrix. 3D architecture of 2D graphene sheets into a Graphene Foam (GrF) assembly has emerged as an effective way to overcome agglomeration. The [...] Read more.
One of the challenges in the processing of advanced composite materials with 2D reinforcement is their extensive agglomeration in the matrix. 3D architecture of 2D graphene sheets into a Graphene Foam (GrF) assembly has emerged as an effective way to overcome agglomeration. The highly reticulated network of branches and nodes of GrF offers a seamless pathway for photon and electron conduction in the matrix along with improved mechanical properties. 3D GrF nano-filler is often fabricated by chemical vapor deposition (CVD) technique, which demands high energy, slow deposition rate, and restricting production to small scale. This work highlights freeze-drying (FD) technique to produce 3D graphene nanoplatelets (GNP) foam with a similar hierarchical structure to the CVD GrF. The FD technique using water as the main chemical in 3D GNP foam production is an added advantage. The flexibility of the FD in producing GNP foams of various pore size and morphology is elucidated. The simplicity with which one can engineer thermodynamic conditions to tailor the pore shape and morphology is presented here by altering the GNP solid loading and mold geometry. The FD 3D GNP foam is mechanically superior to CVD GrF as it exhibited 1280 times higher elastic modulus. However, thermal diffusivity of the FD GNP foam is almost 0.5 times the thermal diffusivity of the CVD GrF due to the defects in GNP particles and pore architecture. The versatility in GNP foam scalability and compatibility to form foam of other 1D and 2D material systems (e.g., carbon nanotubes, boron nitride nanotubes, and boron nitride nanoplatelets) brings a unique dimensionality to FD as an advanced engineering foam development process. Full article
(This article belongs to the Special Issue Graphene Foam Based Composites)
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