Polyelectrolyte layer-by-layer deposition on nanoporous supports for ion selective membranes.

ABSTRACT: This work demonstrates that the ionic selectivity and ionic conductivity of nanoporous membranes can be controlled independently via layer-by-layer (LbL) deposition of polyelectrolytes and subsequent selective cross-linking of these polymer layers. LbL deposition offers a scalable, inexpensive method to tune the ion transport properties of nanoporous membranes by sequentially dip coating layers of cationic polyethyleneimine and anionic poly(acrylic acid) onto polycarbonate membranes. The cationic and anionic polymers are self-assembled through electrostatic and hydrogen bonding interactions and are chemically crosslinked to both change the charge distribution and improve the intermolecular integrity of the deposited films. Both the thickness of the deposited coating and the use of c

SUBMITTER: Percival SJ 

PROVIDER: S-EPMC9086297 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature