In the first approach, a mixture of GO and methylmethacrylate monomers (MMA) were polymerized using a bulk polymerization method. The general approach focused on a facile method for in situ bulk polymerization of polymethylmethacrylate containing RGO nanosheets (RGO/PMMA). Our goal is to understand the effect of nanocomposite preparation techniques on the homogeneity and thermal behavior of RGO-polymer nanocomposites. The second technique involves in situ reduction of GO/PMMA via MWI in the presence of HH. The first technique involves preparing the RGO nanosheets filler via the MWI reduction of GO in the presence of HH. Herein, we report two different preparation techniques for polymethylmethacrylate (PMMA/RGO) nanocomposites. Several studies have reported the successful incorporation of GR nanosheets into the PMMA matrix with different preparation techniques using various methods of GR preparation, such as from reduced GO, functionalized RGO sheets or chemical vapor deposition. Polymethylmethacrylate (PMMA) is an important polymeric material that has been used in medicine (bone cement), dentistry, the paper, paint and automobile industries and in many other applications. In MWI, dielectric heating energy is transferred directly to the reactants, and the energy is supplied to the molecules faster than they are able to relax, creating high instantaneous temperatures that typically increase the yield and quality of the product. We are interested in investigating the use as a filler of RGO nanosheets prepared via the reduction of GO facilated by MWI, which offers a fast and easy method for synthesizing polymer nanocomposites. This interaction has been demonstrated during the preparation of polymer nanocomposites, in which the dispersion of chemically reduced GO is maintained in the presence of the polymer.

In this approach, oxygen functional groups, such as carboxyl, carbonyl and hydroxyl groups, were introduced into the carbon skeleton of the GO, enabling it to interact with polymers through those oxygenated functionalities.

This affinity makes GO an important intermediate in the preparation of RGO polymer composites via chemical reduction. GO has an affinity for polar solvents and polymers. The resulting product is composed of graphene sheets with polar functional groups, even after the reduction. Recently, the El-Shall group demonstrated a novel approach for the production of GR sheets (RGO) prepared via the Hoffman Hummers method via reduction of GO using hydrazine hydrate (HH) facilated by using MWI.

One of the advantages of graphene oxide (GO) is that it can be easily dispersed in water and physiological environments due to its abundant hydrophilic groups, which include hydroxyl, epoxide and carboxylic groups on its large surface.

Dndc of pmma in dmf