Highly Selective Polyelectrolyte Multilayer Membranes Through Hydrophobic Interactions.

ABSTRACT: Polyelectrolyte multilayer (PEM) membranes are highly promising for the removal of organic micropollutants (OMPs) from wastewater. However, for the removal of small OMPs, dense membranes with a low molecular weight cutoff (MWCO) are required. It has been recently demonstrated that MWCO correlates with PEM swelling by water. We therefore propose that dense membranes could be fabricated by enhancing hydrophobic interactions to decrease swelling. Controlled synthesis of hydrophobic polycations was achieved by quaternization of poly(4-vinylpiridine) (P4VP) with alkyl chains of varying length, which will also enhance its chemical stability. Optical reflectometry shows that multilayers can be successfully grown with the quaternized P4VPs (QP4VPs) and poly(styrenesulfonate) (PSS). Permeability an

SUBMITTER: Jonkers WA 

PROVIDER: S-EPMC11986897 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature