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Synthesis of organosoluble aromatic poly(ether ketone)-polyimide copolymers from 9-(4-aminophenyl)-9-(4-hydroxyphenyl)fluorene.
- Source :
-
Polymer Bulletin . May2024, Vol. 81 Issue 7, p6571-6586. 16p. - Publication Year :
- 2024
-
Abstract
- 9-(4-Aminophenyl)-9-(4-hydroxyphenyl)fluorene reacted with 4,4′-difluorobenzophenone to afford an aromatic ketone-containing aromatic diamine. The aromatic diamine was polymerized with four kinds of tetracarboxylic dianhydrides at room temperature(rt) followed by chemical imidization (Ac2O/NEt3) at 160 °C to afford the corresponding aromatic poly(ether ketone)-polyimide (PEK-PI) alternating copolymers. The resulting PEK-PI copolymers have sufficiently high molecular weights (Mw = 37,600–47,500 or insoluble in all organic solvents), thermal stability (Tg = 269–363 °C) above aromatic poly(ether ketone)s and below aromatic polyimides, and more colorless transparency than typical aromatic poly(ether ketone)s and aromatic polyimides. PEK-PI films, which were fabricated by casting from the CHCl3 solutions, are flexible and free-standing. Hybridization of PEK and PI will lead to the creation of organosoluble (except one PEK-PI), colorless transparent, and thermally stable materials. [ABSTRACT FROM AUTHOR]
- Subjects :
- *KETONES
*FLUORENE
*COPOLYMERS
*POLYIMIDES
*POLYETHERS
*ETHERS
*ORGANIC solvents
Subjects
Details
- Language :
- English
- ISSN :
- 01700839
- Volume :
- 81
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Polymer Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 177775142
- Full Text :
- https://doi.org/10.1007/s00289-023-05022-x