Naturally Derived Allylated Gallic Acid for Interfacially Polymerized Membranes

Banan Alhazmi, Fadhilah Alduraiei, Priyanka Manchanda, Stefan Chisca, Gyorgy Szekely, Suzana P. Nunes*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A naturally derived monomer, allylated gallic acid (AG), was herein proposed as a monomer for interfacially polymerized thin-film composite nanofiltration membranes. We investigated the synthesis of the thin-film composite polyester membranes by varying the concentration of the AG monomer and the reaction time with trimesoyl chloride. In addition, we demonstrated the synthesis of a polyesteramide film using a mixture of AG and m-phenylene diamine, although there are a few orders of magnitude differences in their reactivity. While membranes prepared using the classical polyamide process had a water permeance of 0.54 L m-2 h-1 bar-1, the prepared polyesteramide and polyester films had water permeances of 12.3 and 47.6 L m-2 h-1 bar-1, respectively The rejection of dyes was larger than 700 g mol-1 and could be tuned to 327 g mol-1 by changing the chemical composition and reaction time. The retention of inorganic salts followed the order Na2SO4 > MgSO4 ≈ NaCl. Therefore, the membrane performance demonstrates the potential of the phenolic monomer to be integrated into the synthesis of thin-film composite membranes. Besides, the availability of the free allyl group holds potential for further modification and covalent binding onto the surface.

Original languageEnglish (US)
Pages (from-to)13585-13594
Number of pages10
JournalACS Sustainable Chemistry and Engineering
Issue number41
StatePublished - Oct 17 2022


  • green chemistry
  • interfacial polymerization
  • nanofiltration
  • natural precursor
  • thin film

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Renewable Energy, Sustainability and the Environment


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