The role of ionic strength and odd–even effects on the properties of polyelectrolyte multilayer nanofiltration membranes
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Type
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Journal
Article
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Author
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Joris
de Grooth
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Author
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Radek
Oborný
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URL
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Volume
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475
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Pages
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311-319
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Publication
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Journal
of Membrane Science
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Date
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February
1, 2015
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Abstract
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Modification
of membranes by polyelectrolytes via the Layer-by-Layer technique shows
promise as a means to produce nanofiltration membranes. Researchers
fabricated such membranes by alternatively coating a polycation
(poly(diallyldimethylammonium chloride) (PDADAMAC)) and a polyanion
(poly(styrene sulfonate) (PSS)) on a porous support.
Depending on the coating conditions, hollow fiber membranes with rejections of up to 71% NaCl and 96% Na2SO4 were obtained. Research results also revealed that the final membrane properties can be easily controlled by variation of the ionic strength of the coating solution, the number of layers and the choice of terminating polyelectrolyte layer. |
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