Development of High-Performance In-Situ Polypropylene/Nylon 6 Microfibrillar Composites
Microfibrillar in-situ composites of polypropylene (PP)/nylon 6 (N6) blends were prepared in the presence and absence of carbon nanotubes (CNTs). The N6/PP/CNT blends were prepared by melt blending in a twin screw extruder. These extruded strands were elongated in a lab scale cold stretching unit followed by consolidation in a compression molding machine. The scanning electron microscope (SEM) micrographs of extruded blends displayed immiscible blend morphology which became aligned and oriented after fibrillation step. The mechanical performance of the extrudates affirms the contribution of microfibrils and CNTs in reinforcing PP matrix. The storage modulus of the MFCs was found to be superior to the individual polymers throughout the temperature range of analysis.