Abstract
This paper is devoted to analysis of the surface properties of polypropylene fibrous materials modified during molding via introduction of polytetrafluoroethylene ultradisperse powder into polypropylene melt. It is shown that the modification changes not only the bulk, but also surface, characteristics of the fibrous material. Evidence is provided of the presence of polytetrafluoroethylene particles on the fiber surface, and its content is determined. The effect of fiber modification on its tangential resistance coefficient and its amenability to processing is considered. The effect of ultradisperse polytetrafluoroethylene introduced into polypropylene melt on the hydrophobicity of the modified fibrous material is analyzed in detail.
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