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

    22 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 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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