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Ionic strength- and thermo-responsive polyethersulfone composite membranes with enhanced antifouling property

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 changing the ionic strength varying from 0 mol/kg and 1.0 mol/kg and/or changing the surrounding temperature varying from 15 oC to 90 oC, and both the responses were reversible. The thermo-response transition temperature could be regulated by changing the chemical compositions of zwitterionic copolymers. Furthermore, the zwitterionic copolymer modified membranes exhibited excellent antifouling resistances to protein solutions and surfactant-stabilized oil-in-water emulsions. Ionic strength- and thermo-responsive flux, separation ability, together with excellent antifouling property endowed the membranes with wide applications in the field of separation.

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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, Accepted Manuscript
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    Ionic strength- and thermo-responsive polyethersulfone composite membranes with enhanced antifouling property

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

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