In addition, it is interesting to investigate the effect of MWI on the type of interaction and the
thermal stability of the same filler (RGO nanosheets) with a different type of polymer matrix, methyl
methacrylate (hydrophilic), compared to styrene (hydrophobic). The results suggest that MWI may
affect the type of dispersion (intercalation vs. exfoliation) and interfacial interactions between the RGO
nano-filler sheets within the polymer matrix. The experimental results suggest that the de-lamination
and exfoliation of the RGO sheets was enhanced and improved with the MWI approach and showed
better dispersion of the RGO filler within the polymer matrix, hence enhancing the thermal properties
of the RGO/PSTY composites.