A Deep Eutectic Solvent as a Modifier of Polyphenylene Oxide Membranes for Acetic Acid Dehydration

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Abstract

Abstract: In this study, for acetic acid dehydration by the pervaporation method, poly(2,6-dimethyl-1,4-phenylene oxide) composite membranes have been synthesized with the introduction of a modifier of a new type, which is a representative of the class of deep eutectic solvents and based on zinc chloride and acetamide taken in a molar ratio of 1 : 3. The membrane structure has been studied by scanning electron microscopy and X-ray diffraction analysis; thermal stability has been determined by thermogravimetric analysis. Transport properties have been studied by vacuum pervaporation during the separation of a water–acetic acid mixture. It has been shown that the introduction of a deep eutectic solvent contributes to an increase in the membrane flux and selectivity in the case of a small amount of the modifier. The highest separation factor has been found for a membrane containing 5 wt % of the modifier (more than 99 wt % of water in the permeate).

Original languageEnglish
Pages (from-to)124-130
Number of pages7
JournalMembranes and Membrane Technologies
Volume3
Issue number2
DOIs
StatePublished - Mar 2021

Scopus subject areas

  • Chemistry (miscellaneous)
  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)

Keywords

  • acetic acid
  • deep eutectic solvent
  • pervaporation
  • polymer membranes
  • polyphenylene oxide

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