Polyelectrolyte multilayer (PEM) polymer membranes
Modification, characterization and application
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A wide variety of polyelectrolytes have been utilized in the formation of polyelectrolyte multilayers (PEMs) over polymer membranes using widely accepted layer-by-layer (LbL) deposition technique. This allows the gradual and controlled build-up of electrostatically cross linked films of polycation-polyanion layers.Thus PEMs can offer nano level films with high flux and selectivity for membrane separations. This nano skin over membranes has totally changed the properties of membrane systems and makes it suitable for applications such as water treatment, softening, brackish water reclamation, an...
A wide variety of polyelectrolytes have been utilized in the formation of polyelectrolyte multilayers (PEMs) over polymer membranes using widely accepted layer-by-layer (LbL) deposition technique. This allows the gradual and controlled build-up of electrostatically cross linked films of polycation-polyanion layers.Thus PEMs can offer nano level films with high flux and selectivity for membrane separations. This nano skin over membranes has totally changed the properties of membrane systems and makes it suitable for applications such as water treatment, softening, brackish water reclamation, and dye-salt separations. This layer-by-layer (LbL) modification readily converts polymeric ultra filtration membranes into materials capable of nano filtration. The book discuss about the modification of polymer membranes with different PEMs, its characterization and application with special reference to water purification.
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