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(a) Schematic illustration of the methodology of the abrasion test. The variation of water contact angles of the coated fabric (b) scratched by the sandpaper, and (c) stretched by axial tensile forces. Insets are the corresponding separation efficiencies for the oil-water mixture; (d) Images of the stretched textile (left) and water droplets on the broken yarns (right). (Reprinted from Reference [99] with permission).
