Overview of rough surface construction technology for cotton fabrics used in oil/water separation

Abstract

The waste organic solvents, the discharge of all kinds of oil-water mixture and the frequent infiltration of oil pollution into the water have brought unbearable threats to the ecological environment. The separation and recovery of oil/water mixture are investigated by more and more scholars. Many researchers have developed separation materials with excellent separation efficiency and high separation flux, including filter materials, adsorption materials and smart materials with switch wettability. Among them, the natural cotton fabric as a separation material substrate, because of its three-dimensional surface structure, porous, excellent fiber adsorption capacity and recycling, as well as the advantages of low-cost, biodegradable has been widely studied by scholars. As an oil/water separation material, it is necessary for the substrate surface to have micro-nano structure. In general, the researchers use various methods to modify the surface of the fabric with various kinds of micro-nano particles, which form a certain roughness on the surface of the fabric, and then further modify it, to obtain separation materials for various purposes. In this paper, the technology of rough texture on the surface of cotton fabric for oil/water separation is reviewed.