Processing of epoxy/graphene nanocomposites: effects of surfactants

Wei, Jiacheng and Inam, Fawad (2017) Processing of epoxy/graphene nanocomposites: effects of surfactants. Journal of Polymer Science & Applications, 1 (1). p. 1000101.

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Abstract

The use of graphene has attracted lots of attention in recent years because of its excellent performance in mechanical, electrical and thermal applications. Graphene can significantly improve the properties of epoxy at extremely low loadings. Herein, epoxy/graphene nanocomposites have been prepared to explore the properties enhancement of graphene in epoxy matrix. However, due to the strong van der Waals force on separately dispersed graphene surface, graphene tends to re-aggregate in epoxy matrix. In this work, Sodium Dodecyl Sulphate (SDS) and Gum Arabic (GA) have been selected to disperse graphene. Tensile properties, flexural properties and hardness, etc have been tested to evaluate the effectiveness. After introduced SDS, the tensile strength of nanocomposites increased to 70.4 MPa, the glass transition temperature increased to 76.96°C, compare to that of 64.46 MPa and 69.28°C for 0.3 wt% epoxy/graphene samples and 57.23 MPa and 66.08°C for neat epoxy samples. Nanocomposites prepared with GA also showed moderate increment. The results show that with the incorporation of graphene, the properties of epoxy improved significantly. Moreover, SDS and GA further increased the properties of nanocomposites. SDS shows better dispersion effect than GA.

Item Type: Article
Uncontrolled Keywords: Epoxy; Graphene; Dispersion; Sodium dodecyl sulphate (SDS); Gum Arabic (GA)
Subjects: F200 Materials Science
H300 Mechanical Engineering
H800 Chemical, Process and Energy Engineering
J400 Polymers and Textiles
J500 Materials Technology not otherwise specified
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Fawad Inam
Date Deposited: 13 Apr 2017 16:14
Last Modified: 08 Sep 2017 02:39
URI: http://nrl.northumbria.ac.uk/id/eprint/30499

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