Enhancing the solvent-dendrimer miscibility at the interface and its impact on the thin film composite membrane

J. Y. Sum, J. J. Beh, A. L. Ahmad, B. S. Ooi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Poly(amidoamine) (PAMAM) based thin film composite (TFC) membranes were prepared via interfacial polymerization with the aid of co-solvent. The addition of acetone promoted miscibility between the hexane and water phases, which enhanced the dissolution of the dendrimer and water into the reaction zone. By adding acetone, the membranes showed enhanced multivalent cation rejection. However, the presence of moisture promotes the hydrolysis of unreacted acyl chloride which lead to pore broadening effect. Pore enlargement was related to the presence of moisture in organic phase which was diffused from aqueous phase due to its affinity toward acetone–hexane solution.

Original languageEnglish (US)
Pages (from-to)229-239
Number of pages11
JournalJournal of Industrial and Engineering Chemistry
Volume58
DOIs
StatePublished - Feb 25 2018

Keywords

  • Co-solvent
  • Dendrimer
  • Interfacial polymerization
  • Poly(amidoamine)
  • Thin film composite membrane

ASJC Scopus subject areas

  • Chemical Engineering(all)

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