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Janus Membranes with Opposing Surface Wettability Enabling Oil-to-Water and Water-to-Oil Emulsification

2017; American Chemical Society; Volume: 9; Issue: 6 Linguagem: Inglês

10.1021/acsami.7b00017

1944-8252

Ming‐Bang Wu, Hao‐Cheng Yang, Jingjing Wang, Guang‐Peng Wu, Zhi‐Kang Xu,

Surface Modification and Superhydrophobicity

A Janus membrane with opposing wettability was first reported with both function of water-to-oil and oil-to-water emulsification. This membrane is conveniently fabricated by single-surface deposition of polydopamine/polyethylenimine (PDA/PEI). The asymmetric wettability can also reduce the transmembrane resistance during the process, indicating an economical and promising strategy to prepare various emulsions. This research opens a novel avenue for exploring and understanding the Janus membrane, and provides a perspective to design the asymmetric membrane structures with promoted performance in conventional membrane processes.