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

I. A. Ronova*, M. Bruma, O. V. Sinitsyna, I. Sava, A. Yu Nikolaev, Stefan Chisca, N. G. Ryvkina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A series of polyimide films, whose repeating units had different contents of fluorine atoms in the structure, was subjected to swelling in supercritical carbon dioxide. The greatest increase in the free volume was 257 % of the initial value. This led to the formation of foams and reduction of the dielectric constant even below 1.5.

Original languageEnglish (US)
Pages (from-to)1687-1694
Number of pages8
JournalStructural Chemistry
Volume25
Issue number6
DOIs
StatePublished - Jan 1 2014

Keywords

  • Conformational parameters
  • Dielectric constant
  • Free volume
  • Microstructure
  • Polyimide
  • Supercritical carbon dioxide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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