| Summary: | 碩士 === 義守大學 === 材料科學與工程學系 === 104 === Recently, the growth of oil production and transportation resulted in the greater potential for accidental oil spills. Thus, oil/water separation has become a worldwide challenge. For this reason, there is a need to invent new materials for the separation of large amounts of organic pollutants in water system.
In this work, we describe simple methods for fabricating superhydrophilic and under water superoleophobic polyvinylpyrrolidone (PVP)-coated cotton. The superhydrophilic PVP-coated cotton separated a range of oil/water mixtures effectively with high water flux (>61000 L m-2 h-1) and good oil/water separation efficiency under the drive of gravity. Moreover, after performing a simple compression process, the superhydrophilic PVP-coated cotton could also separates both surfactant-free and surfactant-stabilized oil-in-water emulsions with high separation efficiency (>99.5 %), making it a promising candidate material for use in oil/water separations.
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