Stepwise synthesis of polyacrylonitrile-supported oligoamide membranes with selective dye–salt separation

Interface-Confined Channels Facilitating Water Transport through an IL-Enriched Nanocomposite Membrane

“…14,15 Recently, a strategy for stepwise assembly by using m-phenylenediamine and trimesoyl chloride (TMC) to prepare an oligoamide membrane to improve membrane permeance has been reported. 16,17 Hybridization with other nanomaterials is a promising strategy for constructing highly permeable PA membranes. 18,19 In this respect, nanomaterials, including graphene oxide, porous organic polymers, covalent organic frameworks, and metal−organic frameworks, have been employed as the filler incorporated in the PA membrane to create abundant transport channels.…”

“…The polyamide (PA) nanofiltration membrane has shown significant potential in liquid treatment, − which is generally prepared via the interfacial polymerization (IP) method on a porous support membrane. , However, such membrane often suffers from relatively low solvent permeance, making it increasingly challenging to meet the demands in practical industrial applications. , Reducing the thickness of the PA layer helps improve the permeance by diminishing the mass transfer resistance, but it is also prone to defects. − Another common method to enhance water permeability is constructing wrinkled and rough structures on the PA layer surface to increase the effective membrane area . Microporous polymer membranes often exhibit excellent separation properties. , Additives were introduced into the aqueous solution to regulate the amine monomer behavior, thereby constructing the high-performance PA layer. , Recently, a strategy for stepwise assembly by using m -phenylenediamine and trimesoyl chloride (TMC) to prepare an oligoamide membrane to improve membrane permeance has been reported. , …”