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Molecular Dynamics Simulations of Graphite-Vinylester Nanocomposites and Their Constituents

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2010, 11(4), pp.316-324
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

H. Alkhateb 1 A. Al-Ostaz 1 A. H.-D. Cheng 1

1The University of Mississippi

Candidate

ABSTRACT

The effects of geometrical parameters on mechanical properties of graphite-vinylester nanocomposites and their constituents (matrix, reinforcement and interface) are studied using molecular dynamics (MD) simulations. Young’s modulii of 1.3 TPa and 1.16 TPa are obtained for graphene layer and for graphite layers respectively. Interfacial shear strength resulting from the molecular dynamic (MD) simulations for graphene-vinylester is found to be 256 MPa compared to 126 MPa for graphitevinylester. MD simulations prove that exfoliation improves mechanical properties of graphite nanoplatelet vinylester nanocomposites. Also, the effects of bromination on the mechanical properties of vinylester and interfacial strength of the graphene–brominated vinylester nanocomposites are investigated. MD simulation revealed that, although there is minimal effect of bromination on mechanical properties of pure vinylester, bromination tends to enhance interfacial shear strength between graphite–brominated vinylester/graphene-brominated vinylester in a considerable magnitude.

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