An acid-stable positively charged polysulfonamide nanofiltration membrane prepared by interfacial polymerization of polyallylamine and 1,3-benzenedisulfonyl chloride for water treatment.

ABSTRACT: Here, we selected macromolecular polyallylamine (PAH) as the monomer in an aqueous-phase reaction for the first time, which underwent interfacial polymerization with 1,3-benzenedisulfonyl chloride (BDSC) on the surface of a polyethersulfone (PES) ultrafiltration membrane to prepare a new PSA composite membrane with positive charge, acid stability and high separation performance. By tailoring the polymerization conditions, the desired PSA composite membrane exhibited excellent rejection of different salts [MgCl₂ (92.44%) > MgSO₄ (89.2%) > NaCl (56.8%) > Na₂SO₄ (55.2%)] and a high permeation flux of up to 34.10 L m^-2 h^-1 at 0.5 MPa. The properties of the membrane were evaluated using various characterization techniques. The re

SUBMITTER: Wang H 

PROVIDER: S-EPMC9059827 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature