Superhydrophobic and superoleophilic PVDF membranes for effective separation of water-in-oil emulsions with high flux.

Zhang, Wenbin; Shi, Zhun; Zhang, Feng; Liu, Xia; Jin, Jian; Jiang, Lei · Adv Mater · 2013

basic_science · Level V

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Abstract

A superhydrophobic-superoleophilic PVDF membrane is fabricated via an inert solvent-induced phase inversion for effective separation of both micrometer and nanometer-sized surfactant-free and surfactant-stabilized water-in-oil emulsions solely driven by gravity, with high separation efficiency (oil purity in filtrate after separation > 99.95 wt%) and high flux, which is several times higher than those of commercial filtration membranes and reported materials with similar permeation properties.

Medical subject headings