Hydrogel-embedded tight ultrafiltration membrane with superior anti-dye-fouling property for low-pressure driven molecule separation

Abstract

A hydrogel-embedded tight ultrafiltration membrane composed of sodium polyacrylate-modified polyacrylonitrile (PAAS-m-PAN) is fabricated by a modified phase inversion process. The as-prepared membrane with excellent anti-dye-fouling property can effectively separate dyes from salts with permeance as high as >140 L m⁻² h⁻¹ bar⁻¹, which is several times that of traditional polymeric filtration membranes with a similar rejection performance.