Interfacial Engineering for Low-Density Graphene Nanocomposites

Abstract

Over the course of this award, the PI and his group developed a variety of novel techniques for the dispersion of pristine graphene in both aqueous and polar organic solvents. These advances focused on the use of polymeric (polyvinylpyrrolidone) and polyaromatic hydrocarbon (pyrene) dispersants which non-covalently bind to graphene and prevent graphene aggregation. Increases in thermal conductivity were observed for these fluids. Such dispersions were also stable against drying, indicating that graphene-graphene stacking was impeded by the dispersants. Building on this foundation, the PI and group investigated several new platforms for graphene-based materials. They examined the use of graphene in polymer nanocomposites, including epoxy films and poly vinyl alcohol films and electrospun fibers. The addition of pristine graphene showed substantial increases in strength and modulus at low graphene loading.

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Document Details

Document Type
Technical Report
Publication Date
Jul 23, 2014
Accession Number
ADA610190

Entities

People

  • Micah J Green

Organizations

  • Texas Tech University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Composite Materials
  • Conductivity
  • Engineering
  • Films
  • Graphene
  • Iron Oxides
  • Laboratory Magnetometers
  • Low Density
  • Magnetic Fields
  • Materials Laboratories
  • Mechanical Properties
  • Metal Oxide Nanoparticles
  • Nanocomposites
  • Polymer-Matrix Nanocomposites
  • Polymers
  • Thermal Conductivity

Readers

  • Analytical Chemistry
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Reinforced Composite Materials

Technology Areas

  • Microelectronics