Bulk and Surface Modification of Polypropylene Filaments at the Stage of their Formation from a Melt

Abstract

New methods of bulk and surface modification of polypropylene filaments at the stage of their forming from a melt are presented. Modification of polypropylene filaments by introducing a small amount of stabilized metal-containing nanoparticles into the fiber-forming polymer during the melt generation step is considered. It was found that the modified filaments exhibits high quality characteristics. A method for surface modification based on applying a suspension of finely dispersed polytetrafluoroethylene to the surface of a semi-cured polypropylene filament during the sizing stage is also considered. The modified filament acquires an extremely high chemical resistance and a very low coefficient of friction.