Effect of nanofiller on the mechanical and electrical properties of recycle Nylon 6

Recycling is a key focus in the circular economy, particularly in the sustainable utilization of materials such as Nylon 6. To enhance the properties of recycled Nylon 6 (15% RP and 20% RP) and achieve performance comparable to virgin Nylon 6, composites were prepared using a twin-screw extruder to ensure homogeneous mixing. Samples were prepared as per ASTM standards using injection moulding. The incorporation of nanomaterials such as graphene oxide (GO) and reduced graphene oxide (rGO) with varying ratios 0.5%, 1%, 1.5%, 2% and 2.5% added for improving the mechanical and electrical properties of the recycled material. This study evaluates performance of recycled Nylon 6 (15% & 20% Recycle material) with varying percentages of GO and rGO (0.5 to 2.5%) through tensile strength testing, Izod impact testing, hardness measurement and flexural testing. The results indicate that 2% addition of GO and rGO significantly enhances the mechanical properties compared to recycle material. Conductivity measure through dielectric strength test to confirm the electric properties. The analysis of dispersion of GO and rGO within the polymer matrix using scanning electron microscopy (SEM), reveals uniform distribution at the optimal 2% concentration. Fourier-transform infrared spectroscopy (FTIR) was employed to study the grafting of recycled Nylon 6 with virgin Nylon 6, confirming effective compatibility. Additionally, melt flow index (MFI) analysis was conducted to evaluate molecular weight variations. It demonstrates increased viscosity, which correlates with improved mechanical properties. These findings highlight the potential of GO and rGO in enhancing the performance of recycled Nylon 6, contributing to the development of high-performance, sustainable polymer composites.