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Issue 26, 2014
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Mussel-inspired modification of a polymer membrane for ultra-high water permeability and oil-in-water emulsion separation

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Abstract

The surface structures and properties of a membrane largely determine its in-service performance during a filtration process. Here we report a facile hydrophilization method via co-deposition of mussel-inspired polydopamine (PDA) and polyethyleneimine (PEI) on a polypropylene microfiltration membrane. The deposition time is greatly shortened and the surface hydrophilicity is significantly improved compared to those membranes decorated only by PDA. The dopamine/PEI deposition solution can be reused several times with negligible effect on the surface hydrophilicity of membranes. Moreover, the PDA/PEI coating endows the membranes with ultra-high water permeability, allowing microfiltration separation of oil-in-water emulsions under atmospheric pressure.

Graphical abstract: Mussel-inspired modification of a polymer membrane for ultra-high water permeability and oil-in-water emulsion separation

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Publication details

The article was received on 10 Jan 2014, accepted on 02 Apr 2014 and first published on 02 Apr 2014


Article type: Paper
DOI: 10.1039/C4TA00143E
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J. Mater. Chem. A, 2014,2, 10225-10230

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    Mussel-inspired modification of a polymer membrane for ultra-high water permeability and oil-in-water emulsion separation

    H. Yang, K. Liao, H. Huang, Q. Wu, L. Wan and Z. Xu, J. Mater. Chem. A, 2014, 2, 10225
    DOI: 10.1039/C4TA00143E

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