Change of microstructure of polyimide thin films under the action of supercritical carbon dioxide and its influence on the transport properties

I. A. Ronova*, A. Yu Alentiev, S. Chisca, I. Sava, M. Bruma, A. Yu Nikolaev, N. A. Belov, M. I. Buzin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Thin films of four polyimides of various structures having ether, isopropylidene or hexafluoroisopropylidene groups in their repeating units, which had been synthesized in meta-cresol, were treated with supercritical carbon dioxide and their gas transport properties, were investigated. Transport parameters, (permeability and selectivity coefficients) measured before and after treatment with supercritical carbon dioxide, increased from 16 to 168 % and from 5 to 49 %, respectively.

Original languageEnglish (US)
Pages (from-to)301-310
Number of pages10
JournalStructural Chemistry
Volume25
Issue number1
DOIs
StatePublished - Feb 1 2014
Externally publishedYes

Keywords

  • Change of microstructure
  • Polyimides
  • Supercritical carbon dioxide
  • Transport parameters

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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