Self-assembled isoporous block copolymer membranes with tuned pore sizes
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Water Desalination and Reuse Research Center (WDRC)
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AbstractThe combination of nonsolvent-induced phase separation and the self-assembly of block copolymers can lead to asymmetric membranes with a thin highly ordered isoporous skin layer. The effective pore size of such membranes is usually larger than 15 nm. We reduced the pore size of these membranes by electroless gold deposition. We demonstrate that the pore sizes can be controlled precisely between 3 and 20 nm leading to a tunable sharp size discrimination in filtration processes. Besides fractionation of nanoparticles and biomaterials, controlled drug delivery is an attractive potential application. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
SponsorsThe work was supported by the KAUST Seed-Fund Project "Isoporous Membranes".
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