期刊
WATER RESEARCH
卷 124, 期 -, 页码 238-243出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2017.07.057
关键词
Nanoimprint; Surface pattern; Foulant-membrane interaction; Membrane filtration; Protein fouling; Adhesion force measurement
资金
- Victoria University
Imparting water treatment membrane with surface pattern by nanoimprint offered a novel approach to fouling resistance. We employed nanoimprint to fabricate line-shape nanostructure on membrane distillation (MD) membrane surface. Patterned MD membrane exhibited strong antifouling property to Bovine Serum Albumin (BSA) protein during MD separation. Water flux decline and protein deposition were substantially minimized on the patterned MD membrane in comparison with the pristine one. Such lower fouling propensity on the patterned MD membrane was mainly driven by the weak hydrophobic interaction between BSA protein and patterned MD membrane surface. Weaker adhesion force mapping of the patterned MD membrane was quantified. Representative force-distance curve of pristine MD membrane showed a strong attractive depletion force comparing with that of patterned one. The simple, chemical-free, and scalable nanofabrication approach enables varying designs on membrane surface for special membrane properties. (C) 2017 Elsevier Ltd. All rights reserved.
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