Abstract: The invention relates to improved hydrophobicity and water protection of a fibrous fabric substrate (cotton, synthetics and/or their blends) by depositing a thin nanofiber layer and coating with a dispersion of fluoropolymers (fluorinated acrylic co-polymers) that are alternative perfluorinated chemicals (PFCs) based on short-chain chemistry of varying chain length (C4, C6, C8, C10, C12, C14, etc.) perfluoroalkyl constituents.

Abstract: Nanofibers are fabricated in a continuous process by introducing a polymer solution into a dispersion medium, which flows through a conduit and shears the dispersion medium. Liquid strands, streaks or droplets of the polymer solution are continuously shear-spun into elongated fibers. An inorganic precursor may be introduced with the polymer solution, resulting in fibers that include inorganic fibrils. The resulting composite inorganic/polymer fibers may be provided as an end product. Alternatively, the polymer may be removed to liberate the inorganic fibrils, which may be of the same or smaller cross-section as the polymer fibers and may be provided as an end product.

Abstract: Substrates with wet laid staple polymeric nanofibers of short lengths are disclosed. The polymeric nanofibers can be surface coated on a non-woven or woven substrates, wet laid with other fiber types to create a nonwoven substrate or wet laid onto themselves to form a nanofiber-only mat.

Abstract: Nanofibers are fabricated in a continuous process by introducing a polymer solution into a dispersion medium, which flows through a conduit and shears the dispersion medium. Liquid strands, streaks or droplets of the polymer solution are continuously shear-spun into elongated fibers. An inorganic precursor may be introduced with the polymer solution, resulting in fibers that include inorganic fibrils. The resulting composite inorganic/polymer fibers may be provided as an end product. Alternatively, the polymer may be removed to liberate the inorganic fibrils, which may be of the same or smaller cross-section as the polymer fibers and may be provided as an end product.