Improved dispersion and interface in the graphene/epoxy composites via a facile surfactant-assisted process

Yanjun Jean Wan, Long Cheng Tang, Dong Yan, Li Zhao, Yi Bao Li, Lian Bin Wu, Jian Xiong Jiang, Guo Qiao Lai

Research output: Contribution to journalArticle

166 Citations (Scopus)

Abstract

Both the irreversible agglomeration of graphene sheets and poor sheet/matrix interface are obstacles to obtain the desired properties of graphene/polymer composites. Herein, we fabricated epoxy composites with highly dispersed graphene via a facile surfactant-assisted process, and investigated the correlations between surface modification, morphologies, dispersion, re-agglomeration behaviour and interfacial interaction of graphene and the corresponding thermal and mechanical properties of the composites. It is found that the surfactant treatments of graphene are effective to improve their dispersion stability in water and inhibit their re-agglomeration during the curing of resin. Scanning and transmission electron microscopy analysis demonstrates that the dispersion/exfoliation level of graphene in the composites is greatly improved after surface treatments. These above ameliorating effects along with improved interface between the matrix and graphene arising from the hydrophilic and hydrophobic molecules of non-ionic surfactant result in increased tensile properties compared with those without surface modification. Moreover, the thermal stability of the graphene/epoxy composites is slightly enhanced over that of neat epoxy.

Original languageEnglish (US)
Pages (from-to)60-68
Number of pages9
JournalComposites Science and Technology
Volume82
DOIs
StatePublished - Jun 2 2013

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Surface-Active Agents
Graphene
Surface active agents
Composite materials
Surface treatment
Agglomeration
Nonionic surfactants
Tensile properties
Curing
Polymers
Thermodynamic stability
Thermodynamic properties
Resins
Transmission electron microscopy
Mechanical properties
Scanning electron microscopy
Molecules
Water

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Interface
  • B. Mechanical properties
  • B. Thermal properties
  • D. Transmission electron microscopy (TEM)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

Cite this

Improved dispersion and interface in the graphene/epoxy composites via a facile surfactant-assisted process. / Wan, Yanjun Jean; Tang, Long Cheng; Yan, Dong; Zhao, Li; Li, Yi Bao; Wu, Lian Bin; Jiang, Jian Xiong; Lai, Guo Qiao.

In: Composites Science and Technology, Vol. 82, 02.06.2013, p. 60-68.

Research output: Contribution to journalArticle

Wan, Yanjun Jean ; Tang, Long Cheng ; Yan, Dong ; Zhao, Li ; Li, Yi Bao ; Wu, Lian Bin ; Jiang, Jian Xiong ; Lai, Guo Qiao. / Improved dispersion and interface in the graphene/epoxy composites via a facile surfactant-assisted process. In: Composites Science and Technology. 2013 ; Vol. 82. pp. 60-68.
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AU - Zhao, Li

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AU - Wu, Lian Bin

AU - Jiang, Jian Xiong

AU - Lai, Guo Qiao

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