Membranes with designed surface and filtration properties were prepared by grafting and adsorption of polyelectrolyte multilayer systems on membrane surfaces using the layer-by-layer electrostatic self-assembly technique. Microfiltration membranes with a first polyelectrolyte layer grafted onto the surface showed excellent stability during the filtration process. Although a two-fold higher permeate flux was observed for a three-layer polyelectrolyte complex membrane compared to a just grafted one, the protein retention did not change remarkably. Additionally, a reduced protein adsorption was detected by in-situ ATRFTIR spectroscopy for the case of repulsive electrostatic forces between the substrate and the protein under applied test conditions.
Use of graft-modified membranes for water treatment
J. Meier-Haack, T. Carroll; Use of graft-modified membranes for water treatment. Water Supply 1 December 2003; 3 (5-6): 385–392. doi: https://doi.org/10.2166/ws.2003.0193
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