Modified polyisophthalamides bearing pendent benzoylamino and/or (phenylamino)carbonyl groups

✍ Scribed by Ioakim K. Spiliopoulos; John A. Mikroyannidis

• Book ID: 101268137
• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 468 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19960715)34:9<1685::aid-pola5>3.0.co;2-r

✦ Synopsis

A series of modified polyisophthalamides were prepared from 5-(phenylamino)carbonyl-1,3-phenylenediamine and 5-benzoylamino-isophthalic acid. The polymers were characterized by FT-IR, 'H-NMR, inherent viscosity, water absorption measurements, x-ray, DTA, TGA, and isothermal gravimetric analysis. The modified polyamides were amorphous and softened at 210-245OC. They showed higher hydrophilicity and better solubility in certain solvents such as DMF, DMSO, CCl,COOH, cyclohexanone, and n-cresol than the corresponding unmodified polyamide. They started to lose weight at 329-344°C in N2 or air, whereas the degradation of unmodified polyamide started at 320°C in N, and 308°C in air.