Solubility and partial molar volume of carbon dioxide and ethane in crosslinked poly(ethylene oxide) copolymer

Claudio P. Ribeiro, Benny D. Freeman

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13 Citations (Scopus)


Experimental solubility and sorptive dilation data are reported for carbon dioxide and ethane in a crosslinked poly (ethylene oxide) (XLPEO) rubbery copolymer. Five different temperatures (253 ≤ T(K) ≤ 308) were considered, with a maximum gas pressure of 2.09 MPa (20.6 atm). The polymer was prepared by photopolymerization of a solution containing 70 wt % poly(ethylene glycol) methyl ether acrylate (PEGMEA) and 30 wt % poly(ethylene glycol) diacrylate (PEGDA). Sorption isotherms were described by the Flory-Huggins model. For each gas, the Flory-Huggins interaction parameter was a decreasing function of temperature and did not show a composition dependence. Dilation and sorption data were combined to calculate the partial molar volume (PMV) of the gases in the polymer, which was an increasing function of temperature. Based on a comparison with literature data for a XLPEO homopolymer prepared from pure PEGDA over the same range of operating conditions, an effect of the network composition on both gas solubility and PMV was found.

Original languageEnglish
Pages (from-to)456-468
Number of pages13
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number4
Publication statusPublished - 15 Feb 2010
Externally publishedYes


  • Dilation
  • PEO
  • Rubber
  • Rubbery polymer
  • Sorption
  • Swelling

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