Since its discovery [1], graphene has attracted enormous interest
as reinforcement of polymeric matrices due to its excellent
intrinsic properties such as high thermal and electrical conductivity,
excellent mechanical properties and high surface area [2]. All
this makes graphene an ideal candidate to improve the mechanical,
thermal and electrical properties of polymeric composites [3–6].
Graphene is an allotropic form of carbon with planar sheet of sp2
bonded carbon atoms that are densely packed in a honeycomb
crystal lattice [7]. Graphene can be obtained by different methods
such as micromechanical exfoliation [1], ultrasound treatment [8],
chemical or thermal exfoliation of graphite oxide [9] or chemical
vapor deposition (CVD) of methane [10]. Among these methods,
the process of oxidation of the graphite and its subsequent reduction
by rapid thermal expansion is the most used method because
of its simplicity and viability [11].