A pH-stable positively charged composite nanofiltration membrane with excellent rejection performance

• Published in: RSC advances Vol. 9; no. 64; pp. 37546 - 37555
• Main Authors: Jiang, Zhibin, Miao, Jing, He, Yuantao, Hong, Xinjun, Tu, Kai, Wang, Xi, Chen, Shunquan, Yang, Hao, Zhang, Ling, Zhang, Rui
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 18.11.2019; The Royal Society of Chemistry
• Subjects: Aqueous solutions; asymmetric membranes; Chemical attack; chemical structure; Chemistry; Chlorides; cyanuric chloride; Hydrogen ions; Hydroxyl ions; Membranes; mixing; Monomers; Morphology; Nanofiltration; Organic chemistry; piperazine; Polyamide resins; polyamides; Polyamines; Polyethyleneimine; polymerization; Polysulfone resins; protons; Rejection; Steric hindrance; Ultrafiltration

A novel kind of pH-stable positively charged composite nanofiltration (NF) membrane with excellent rejection performance was developed via interfacial polymerization on the surface of a polysulfone (PSF) ultrafiltration (UF) membrane, using a mixture of polyethyleneimine (PEI) and piperazine (PIP) a...