Thermodynamic model of gas permeability in polymer membranes

Do Kyoung Lee, Yong Woo Kim, Kyung Ju Lee, Byoung Ryul Min, Jonc Hak Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A new molecular thermodynamic model is developed of the gas permeability in polymer membranes on the basis of configurational entropy and Flory-Huggins theory to predict permeability dependence on the concentration of penetrant. Three kinds of configurational entropy are taken into account by this model; that is, the disorientation entropy of polymer, the mixing entropy, and specific interaction entropy of polymer/gas. The validity of the mathematical model is examined against experimental gas permeability for polymer membranes. Agreement between experimental and predicted permeability is satisfactory.

Original languageEnglish
Pages (from-to)661-665
Number of pages5
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number6
Publication statusPublished - 2007 Mar 15

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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