Electrical conduction of polyimide films prepared from polyamic acid (PAA) and pre-imidized polyimide (PI) solution

T. Y. Kim, W. J. Kim, T. H. Lee, J. E. Kim, K. S. Suh

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Electrical conduction characteristics in two different polyimide films prepared by the imidization of polyamic acid (PAA) and pre-imidized polyimide (PI) solution were investigated. It is found that the current density of the polyimide film from PAA was higher than that of the polyimide film from PI at the same electric field, even though the conduction mechanism in both polyimide films follows the ionic hopping model. The hopping distance was calculated to be 2.8 nm for PAA type and 3.2 nm for PI type polyimide film. It is also found that the decay rate of the residual electrostatic charges on the polyimide films becomes faster in the PAA type than in the PI type polyimide film.

Original languageEnglish
Pages (from-to)427-432
Number of pages6
JournalExpress Polymer Letters
Volume1
Issue number7
DOIs
Publication statusPublished - 2007 Jul

Keywords

  • Electric conductivity
  • Polyimide
  • Static charge dissipation
  • Thermosetting resins

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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