Evaluation of nanomechanical properties of (styrene-methyl methacrylate) copolymer composites containing graphene sheets

Edreese H Alsharaeh, Nadimul Haque Faisal, Ali A Othman, Rehan Ahmed

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The nanomechanical properties of polymers that contained (styrene methyl methacrylate) copolymer (PS-PMMA) composites with reduced graphene oxide sheets (RGO) prepared by (i) in situ bulk polymerization and (ii) a microwave irradiation (MWI) method were compared. The nanomechanical properties such as the hardness and elastic modulus of these copolymers were analyzed using Berkovich nanoindentation. The results indicate that the composite obtained using the MWI method exhibited a better morphology and increased dispersion with enhanced thermal stability. As a result, the mechanical properties also improved due to increased mechanical interlocking between the graphene oxide (GO) nanofillers and the PS-PMMA matrix, which improved the mechanical strength. An average increase of 136% in hardness and 76% in elastic modulus were achieved through the addition of only 2.0 wt % of RGO composite obtained via the MWI method.

Original languageEnglish
Pages (from-to)17871-17881
Number of pages11
JournalIndustrial and Engineering Chemistry Research
Volume52
Issue number50
DOIs
Publication statusPublished - 18 Dec 2013

Keywords

  • EXFOLIATED GRAPHITE OXIDE
  • POLYMER NANOCOMPOSITES
  • MECHANICAL-PROPERTIES
  • FUNCTIONALIZED GRAPHENE
  • ELASTIC PROPERTIES
  • INDENTATION
  • DISPERSIONS
  • INDENTER
  • SURFACES
  • DELIVERY

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