Tuning the charge of polyelectrolyte complex membranes prepared via aqueous phase separation.

ABSTRACT: In this work, polyelectrolyte mixing ratio is studied as a tuning parameter to control the charge, and thus the separation properties of polyelectrolyte complex (PEC) membranes prepared via Aqueous Phase Separation (APS). In this approach, various ratios of poly(sodium 4-styrenesulfonate) (PSS) and poly(diallyldimethylammonium chloride) (PDADMAC) are mixed at high salinity and the PEC-based membranes are then precipitated using low salinity coagulation baths. The monomeric ratio of PSS to PDADMAC is varied from 1.0 : 0.8 through to 1.0 : 1.2. Obtained membranes have an asymmetric structure and function as nanofiltration membranes with on average 1 L m^-2 h^-1 bar^-1 pure water permeance and <400 Da molecular weight cut-off (MWCO); except for the 1.0 : 1

SUBMITTER: Durmaz EN 

PROVIDER: S-EPMC8549507 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature