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

Research output: Contribution to journalArticlepeer-review

28 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
Pages (from-to)4707-4718
Number of pages12
JournalChemical Engineering Science
Volume64
Issue number22
DOIs
StatePublished - Nov 16 2009

Bibliographical note

Funding Information:
This work was supported in part by a grant from the Kentucky Science and Engineering Foundation as per Grant Agreement KSEF-148-502-05-130 with the Kentucky Science and Technology Corporation. In addition, we are pleased to acknowledge funding from the National Science Foundation Research Experiences for Undergraduates Program administered through the University of Kentucky Center of Membrane Sciences (DMR-0453488). Activities at the University of Texas were supported by the US Department of Energy (Grant DE-FG02-02ER15362) and the US National Science Foundation (Grant CBET-0515425). 1 H NMR experiments were performed by Mr. Steven Sorey and Mr. Jim Wallin of the Nuclear Magnetic Resonance Facility, Department of Chemistry and Biochemistry, University of Texas at Austin.

Keywords

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

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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