Polymers and solvents used in membrane fabrication: A review focusing on sustainable membrane development

Xiaobo Dong, David Lu, Tequila A.L. Harris, Isabel C. Escobar

Research output: Contribution to journalReview articlepeer-review

95 Scopus citations

Abstract

(1) Different methods have been applied to fabricate polymeric membranes with non-solvent induced phase separation (NIPS) being one of the mostly widely used. In NIPS, a solvent or solvent blend is required to dissolve a polymer or polymer blend. N-methyl-2-pyrrolidone (NMP), dimethylacetamide (DMAc), dimethylformamide (DMF) and other petroleum-derived solvents are commonly used to dissolve some petroleum-based polymers. However, these components may have negative impacts on the environment and human health. Therefore, using greener and less toxic components is of great interest for increasing membrane fabrication sustainability. The chemical structure of membranes is not affected by the use of different solvents, polymers, or by the differences in fabrication scale. On the other hand, membrane pore structures and surface roughness can change due to differences in diffusion rates associated with different solvents/co-solvents diffusing into the non-solvent and with differences in evaporation time. (2) Therefore, in this review, solvents and polymers involved in the manufacturing process of membranes are propossed to be replaced by greener/less toxic alternatives. The methods and feasibility of scaling up green polymeric membrane manufacturing are also examined.

Original languageEnglish
Article number309
JournalMembranes
Volume11
Issue number5
DOIs
StatePublished - May 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • Bio-derived solvent
  • Membrane fabrication
  • Non-solvent induced phase separation
  • Polymeric membranes
  • Scale-up

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Filtration and Separation

Fingerprint

Dive into the research topics of 'Polymers and solvents used in membrane fabrication: A review focusing on sustainable membrane development'. Together they form a unique fingerprint.

Cite this