Polydopamine/Cysteine surface modified isoporous membranes with self-cleaning properties
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Type
ArticleAuthors
Shevate, RahulKumar, Mahendra

Karunakaran, Madhavan
Hedhili, Mohamed N.

Peinemann, Klaus-Viktor

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Engineering Program
Imaging and Characterization Core Lab
Physical Science and Engineering (PSE) Division
Surface Science
Date
2017-02-03Online Publication Date
2017-02-03Print Publication Date
2017-05Permanent link to this record
http://hdl.handle.net/10754/622842
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Show full item recordAbstract
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 BVJournal
Journal of Membrane ScienceAdditional Links
http://www.sciencedirect.com/science/article/pii/S0376738816311012ae974a485f413a2113503eed53cd6c53
10.1016/j.memsci.2017.01.058