Crosslinked polyethersulfone membranes for organic solvent nanofiltration in polar aprotic and halogenated solvents

Eric Ziemann, Arindam Kumar Das, Paramita Manna, Revital Sharon-Gojman, Michal Sela-Adler, Charles Linder, Roni Kasher, Roy Bernstein

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Organic solvent nanofiltration is a promising and more sustainable alternative to classic separation processes in multiple industries; however, proposed materials for polymeric membranes with high solvent stability mostly utilize unique or expensive polymers, or are fabricated by complex methods. Herein, a facile method is presented to fabricate crosslinked polyethersulfone membranes with remarkable stability in halogenated and polar aprotic solvents. After preparing the membranes by the conventional non-solvent-induced phase inversion process, a multidentate aromatic amine embedded in the polysulfone underwent diazotization/dediazonization to effectively crosslink the polymer matrix. Membrane performance was easily adjusted from ultra-to nanofiltration via the polymer fraction. The performance of the crosslinked polyethersulfone nanofiltration is similar to the state-of-the-art solvent stable membranes. A weeklong filtration experiment in dimethylformamide and chloroform underlines the membranes' excellent stability. Overall, the range of solvent stability and state-of-the-art performance, combined with high accessibility and scalability, make the presented membranes an ideal platform material.

Original languageEnglish
Article number120963
JournalJournal of Membrane Science
Volume663
DOIs
StatePublished - 5 Dec 2022

Keywords

  • Crosslinking
  • Dediazonization
  • Nanofiltration
  • Organic solvent nanofiltration
  • Polysulfones
  • Solvent resistant membrane

ASJC Scopus subject areas

  • Biochemistry
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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