Pervaporation properties of EC membrane crosslinked by hyperbranched-polyester acrylate

Yunjun Luo*, Wei Xin, Guoping Li, Yin Yang, Jingru Liu, Yong Lv, Yongbin Jiu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

An aliphatic type of hyperbranched-polyester (HBPE) that was synthesized from 2,2-dihydroxymethyl propanyl acid (DMPA) and 1,1,1-trihydroxymethyl propane (TMP) was end-capped with acrylic group, and the photo-polymerizable hyperbranched-polyester (AHBPE) was obtained. These AHBPEs were employed as the macromolecular crosslinking agents to enhance the pervaporation performance of EC membrane for the separation of benzene/cyclohexane mixtures. The effects of the content of AHBPE and benzophenone (BP) as well as the radiating time on the separation factor and the total permeate flux were investigated in detail. The results show that, the performance of EC membranes incorporating AHBPEs of higher generations exhibited much higher flux, with a comparison to the membranes modified by micromolecular crosslinking agent of ethylene glycol dimethacrylate (EGDM). The membrane with the total permeation flux of 42.5 kg μm m-2 h-1 and the separation factor of 6.82 was obtained at the AHBPE and BP content of 40 wt% and 10 wt%, respectively.

Original languageEnglish
Pages (from-to)183-193
Number of pages11
JournalJournal of Membrane Science
Volume303
Issue number1-2
DOIs
Publication statusPublished - 15 Oct 2007

Keywords

  • Acrylate
  • Benzene/cyclohexane
  • Ethyl cellulose
  • Hyperbranched-polyester
  • Pervaporation

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