Porous polyimide films obtained by using lithium chloride as pore-forming agent

Stefan Chisca, Ion Sava*, Maria Bruma

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Porous polyimide films have been obtained by incorporating lithium chloride in poly(amidic acid) precursor, followed by thermal treatment to convert it into polyimide and subsequently leaching out the maximum possible LiCl by water Soxhlet extraction Porous polymer films have been obtained from polyimide based on benzophenonetetracarboxylic dianhydride and 4,4'-diamino-3,3'-dimethyl-diphenylmethane by incorporating lithium chloride (LiCl) in the poly(amidic acid) precursor and subsequently leaching out the maximum possible LiCl by water Soxhlet extraction for 6h. The resulting porous polyimide films were characterized with regard to their pore size, thermal stability and dielectric properties. The morphology of the porous polyimide films showed a uniform distribution and various pore sizes depending on the initial quantity of added pore-forming agent.

Original languageEnglish (US)
Pages (from-to)1634-1643
Number of pages10
JournalPolymer International
Volume62
Issue number11
DOIs
StatePublished - Nov 1 2013

Keywords

  • Atomic force microscopy
  • Low dielectric constant
  • Polyimide
  • Porous films

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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