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Korean Carbon Society (한국탄소학회)
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Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors

  • Lee, Seul-Yi (Department of Chemistry, Inha University) ;
  • Chong, Mi-Hwa (Department of Chemistry, Inha University) ;
  • Park, Mira (Department of OrganicMaterials and Fiber Engineering, Chonbuk National University) ;
  • Kim, Hak-Yong (Department of OrganicMaterials and Fiber Engineering, Chonbuk National University) ;
  • Park, Soo-Jin (Department of Chemistry, Inha University)
  • Received : 2013.10.25
  • Accepted : 2013.12.26
  • Published : 2014.01.31
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Abstract

In this work, nanocomposites of epoxy resin and chemically reduced graphene oxide (RGO) were prepared by thermal curing process. X-ray diffractions confirmed the microstructural properties of RGO. Differential scanning calorimetry was used to evaluate the curing behaviors of RGO/epoxy nanocomposites with different RGO loading amounts. We investigated the effect of RGO loading amounts on the mechanical properties of the epoxy nanocomposites. It was found that the presence of RGO improved both flexural strength and modulus of the epoxy nanocomposites till the RGO loading reached 0.4 wt%, and then decreased. The optimum loading achieved about 24.5 and 25.7% improvements, respectively, compared to the neat-epoxy composites. The observed mechanical reinforcement might be an enhancement of mechanical interlocking between the epoxy matrix and RGO due to the unique planar structures.

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References

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