STUDY ON STRUCTURAL AND THERMAL PROPERTIES OF POLYPROPYLENE SILICA NANOCOMPOSITE FILAMENTS

In this work, the polypropylene filaments containing different proportion of silica nanoparticles weremixed in twin screw extruder and spun through multifilament pilot spinning plant. The morphology of nanocomposite filaments were characterized using scanning electron microscope (SEM), reveal that nano silica powder were uniformly dispersed in polypropylene filament. The presence of silica in polypropylene filament was confirmed by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Thermal behavior of the filaments were evaluated by DSC, revels that incorporation of silica nano particles in polypropylene filament increased the enthalpy (ΔH) and crystallinity % as compared to the pure polypropylene filament.