Issue 35, 2011

In situ preparation of functionalized graphene oxide/epoxy nanocomposites with effective reinforcements

Abstract

In order to obtain homogeneous dispersion and strong filler-matrix interface in epoxy resin, graphene oxide was functionalized via surface modification by hexachlorocyclotriphosphazene and glycidol and then incorporated into epoxy resin to obtain nanocomposites via in situ thermal polymerization. The morphology of nanocomposites was characterized by scanning electron microscopy and transmission electron microscopy, implying good dispersion of graphene nano-sheets. The incorporation of functionalized graphene oxide effectively enhanced various property performances of epoxy nanocomposites. The storage modulus of the epoxy nanocomposites was significantly increased by 113% (2% addition) and the hardness was improved by 38% (4% addition). Electrical conductivity was improved by 6.5 orders of magnitude. Enhanced thermal stability was also achieved. This work demonstrates a cost-effective approach to construct a flexible interphase structure, strong interfacial interaction and good dispersion of functionalized graphene in epoxy nanocomposites through a local epoxy-rich environment around graphene oxide sheets, which reinforces the polymer properties and indicates further application in research and industrial areas.

Graphical abstract: In situ preparation of functionalized graphene oxide/epoxy nanocomposites with effective reinforcements

Article information

Article type
Paper
Submitted
05 Apr 2011
Accepted
02 Jun 2011
First published
08 Aug 2011

J. Mater. Chem., 2011,21, 13290-13298

In situ preparation of functionalized graphene oxide/epoxy nanocomposites with effective reinforcements

C. Bao, Y. Guo, L. Song, Y. Kan, X. Qian and Y. Hu, J. Mater. Chem., 2011, 21, 13290 DOI: 10.1039/C1JM11434D

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