✦ LIBER ✦

Synthesis and characterization of soluble polyamides based on 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane and 2,2-bis[4-(4-aminophenoxy)phenyl]propane and diacid chlorides

✍ Scribed by Yuvraj Singh Negi; Yoshi-Ichi Suzuki; Ichiro Kawamura; Masa-Aki Kakimoto; Yoshio Imai

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 464 KB
Volume: 34
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(19960715)34:9<1663::aid-pola3>3.0.co;2-t

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✦ Synopsis

Aromatic soluble polyamides and copolyamides having hexafluoroisopropylidene and isopropylidene moieties in the molecular structure of polymer chain were prepared by reacting the aromatic diacid chlorides and fluorine or nonfluorine containing aromatic diamines using low-temperature polycondensation process. Polymers were produced with high yield and moderate to high inherent viscosity. All polyimides and copolyamides showed thermal stability above 440°C and glass transition temperature above 200°C. Some of the polyamides were cast into transparent bulk films which were further characterized by mechanical, xray, and water absorption analysis. Fluoro polyamides showed superior structural properties as compared to nonfluoro polyamides.

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