P84 polyimide membranes modified by a tripodal amine for enhanced pervaporation dehydration of acetone

Dave W. Mangindaan, Nelson Minyang Woon, Gui Min Shi, Tai-Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

In this work we have fabricated P84 asymmetrical flat sheet membranes with a sponge-like structure by carefully formulating the polymer dope, followed by crosslinking the P84 membranes with a tripodal amine (tris(2-aminoethyl)amine (TAEA)) in a methanol solution, combined with heat treatment. The separation performances for acetone dehydration as functions of dope formulation, TAEA crosslinking time and post-annealing duration were further investigated and optimized by using the Taguchi statistical method. The membrane with the best pervaporation performance possessed a high separation factor of 983 with a reasonable flux of 0.658kgm-2h-1. FESEM, FTIR and XPS were employed to elucidate the crosslinking mechanisms and explain the evolution of physicochemical properties and chemistry-performance relationship. A benchmark comparison indicates that the newly developed P84/TAEA crosslinked membrane has good separation performance for acetone dehydration.

Original languageEnglish (US)
Pages (from-to)14-23
Number of pages10
JournalChemical Engineering Science
Volume122
DOIs
StatePublished - Jan 1 2015

Keywords

  • Acetone
  • Crosslinking
  • P84
  • Pervaporation
  • Tris(2-aminoethyl)amine

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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