Study the characteristics of novel ionic liquid functionalized graphene oxide on the mechanical and thermal properties of silicone rubber nanocomposites

In the present work, we investigated the effect of ionic liquid (1 ethyl 3-methylimidazolium dicyanamide) modified graphene oxide (ILGO) on the mechanical and thermal behaviour of silicone rubber (QM) nanocomposites. Silicone rubber nanocomposites (QMILGO) were prepared by the conventional two roll mixing method. The interactions of ILGO and silicone rubber nanocomposites have been investigated using Fourier- transform infrared spectroscopy, Raman spectroscopy, Dynamical mechanical analysis and thermal conductivity measurements. The surface treatment of graphene oxide with IL resulted in significant changes in the mechanical and thermal properties of nanocomposites, which can be attributed to increased filler–polymer interaction. Study show that the inclusion of ILGO led to an 18% improvement in mechanical properties and a 10% enhancement in thermal stability of QMILGO nanocomposites. Thermal conductivity studies and dynamical mechanical analyses (DMA) of composites indicate that QMILGO 1.5 nanocomposite obtained maximum thermal conductivity (28% improvement), and dynamic mechanical behaviour as compared to neat QM.