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    Polydopamine/Cysteine surface modified isoporous membranes with self-cleaning properties

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    Type
    Article
    Authors
    Shevate, Rahul
    Kumar, Mahendra cc
    Karunakaran, Madhavan
    Hedhili, Mohamed N. cc
    Peinemann, Klaus-Viktor cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Engineering Program
    Imaging and Characterization Core Lab
    Physical Science and Engineering (PSE) Division
    Surface Science
    Date
    2017-02-03
    Online Publication Date
    2017-02-03
    Print Publication Date
    2017-05
    Permanent link to this record
    http://hdl.handle.net/10754/622842
    
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    Abstract
    The major challenge in membrane filtration is fouling which reduces the membrane performance. Fouling is mainly due to the adhesion of foulants on the membrane surfaces. In this work, we studied the fouling behaviour of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) isoporous membrane and the mussel inspired polydopamine/L-cysteine isoporous zwitterionic membrane. Polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) isoporous membranes were fabricated via self-assembly and non-solvent induced phase separation method. Subsequently, the isoporous membrane was modified by a mild mussel-inspired polydopamine (PDA) coating; the isoporous surface structure and the water flux was retained. Zwitterionic L-cysteine was further anchored on the PDA coated membranes via Michael addition reaction at pH 7 and 50 °C to alleviate their antifouling ability with foulants solution. The membranes were thoroughly characterized using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM) and zeta potential measurements. Contact angle and dynamic scanning calorimetry (DSC) measurements were carried out to examine the hydrophilicity. The pH-responsive behaviour of the modified membrane remains unchanged and antifouling ability after PDA/L-cysteine functionalization was improved. The modified and unmodified isoporous membranes were tested using humic acid and natural organic matter model solutions at 0.5 bar feed pressure.
    Citation
    Shevate R, Kumar M, Karunakaran M, Hedhili MN, Peinemann K-V (2017) Polydopamine/Cysteine surface modified isoporous membranes with self-cleaning properties. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2017.01.058.
    Sponsors
    The authors acknowledge the financial support from King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2017.01.058
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S0376738816311012
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2017.01.058
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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