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 language | English (US) |
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Pages (from-to) | 1634-1643 |
Number of pages | 10 |
Journal | Polymer International |
Volume | 62 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2013 |
Keywords
- Atomic force microscopy
- Low dielectric constant
- Polyimide
- Porous films
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry