Relation between structure and gas transport properties of polyethylene oxide networks based on crosslinked bisphenol A ethoxylate diacrylate

Jeffrey J. Richards, Michael K. Danquah, Sumod Kalakkunnath, Douglass S. Kalika*, Victor A. Kusuma, Scott T. Matteucci, Benny D. Freeman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Poly(ethylene oxide) (PEO) networks prepared from the photopolymerization of bisphenol A ethoxylate diacrylate (BPA-EDA) have been investigated as a function of crosslinker molecular weight and copolymer composition. Dynamic mechanical and dielectric methods have been used to elucidate the thermal relaxation characteristics of the polymers as a function of network composition and architecture, and these properties were related to measured gas transport for CO2 separations. Copolymerization strategies involving the insertion of flexible PEG side chains along the network backbone proved effective in enhancing network free volume and increasing permeability. The gas transport performance of rubbery amorphous membranes based on the n=15 BPA-EDA crosslinker (i.e., crosslinker encompassing 30 ethylene oxide repeat units between crosslinks) compared favorably to model polymers synthesized from poly(ethylene glycol) diacrylate.

Original languageEnglish (US)
Pages (from-to)4707-4718
Number of pages12
JournalChemical Engineering Science
Volume64
Issue number22
DOIs
StatePublished - Nov 16 2009

Keywords

  • Carbon dioxide
  • Gases
  • Membranes
  • Polymers
  • Separations
  • Thermal analysis

ASJC Scopus subject areas

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

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