Summary: A composite film composed of porous polyurethane (PU) and polystyrene (PS) microspheres with both superhydrophobicity and superoleophilicity has been prepared. In this film, the dual‐scale structure enhances both the hydrophobicity and oleophilicity of the surface material. The composite film with such an ‘intelligent’ wettability property can be utilized to separate oil and water systems efficiently. The composite film can be used to separate diesel oil and water. magnified image The composite film can be used to separate diesel oil and water.
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Zhang et al. (2006) studied this question.
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