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Issue 7, 2018
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Ionic strength- and thermo-responsive polyethersulfone composite membranes with enhanced antifouling properties

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Abstract

Smart materials with controllable responses to various stimulations offer considerable potential in many applications. Herein we report a simple and efficient method to fabricate ionic strength- and thermo-responsive polyethersulfone composite membranes using zwitterionic copolymers of sulfobetaine methacrylamide (SBMI) and sulfobetaine methacrylate (SBMA). The permeability of the modified membranes could be adjusted by varying the ionic strength from 0 mol kg−1 to 1.0 mol kg−1 and/or varying the surrounding temperature from 15 °C to 90 °C, and both the responses were reversible. The thermo-response transition temperature could be regulated by changing the chemical compositions of the zwitterionic copolymers. Furthermore, the zwitterionic copolymer modified membranes exhibited excellent antifouling resistances to protein solutions and surfactant-stabilized oil-in-water emulsions. Their ionic strength- and thermo-responsive flux, separation ability, and excellent antifouling properties endowed the membranes with a wide range of applications in the field of separation.

Graphical abstract: Ionic strength- and thermo-responsive polyethersulfone composite membranes with enhanced antifouling properties

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Publication details

The article was received on 03 Jan 2018, accepted on 18 Jan 2018 and first published on 13 Feb 2018


Article type: Paper
DOI: 10.1039/C8NJ00039E
Citation: New J. Chem., 2018,42, 5323-5333
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    Ionic strength- and thermo-responsive polyethersulfone composite membranes with enhanced antifouling properties

    T. Xiang, T. Lu, W. Zhao and C. Zhao, New J. Chem., 2018, 42, 5323
    DOI: 10.1039/C8NJ00039E

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