Improvement of thermal stability of new heteroaromatic poly(azomethine urethane)s | Zendy

Issam A. M. | Zendy; Ismail J. | Zendy

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Improvement of thermal stability of new heteroaromatic poly(azomethine urethane)s

Author(s) -

Issam A. M.,

Ismail J.

Publication year - 2006

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.23461

Subject(s) - hexamethylene diisocyanate , thermogravimetric analysis , thermal stability , differential scanning calorimetry , polymer chemistry , polyurethane , polymer , materials science , crystallinity , fourier transform infrared spectroscopy , methylene , toluene diisocyanate , chemistry , chemical engineering , organic chemistry , composite material , physics , engineering , thermodynamics

New poly(azomethine urethane)s were synthesized in the conventional literature manner by reacting a new bisphenol‐containing azomethine group, N , N ′‐bis(4‐hydroxyl‐3‐methoxy benzylidine)‐2,6‐diaminopyridine (I) with various diisocyanates, such as hexamethylene diisocyanate (HDI) (a), methylene‐4,4′‐diphenyl diisocyanate (MDI) (b), and toluene‐2,4‐diisocyanate (TDI) (c). The resulting polymers I(a–c) were confirmed by 1 H‐NMR, FTIR, UV, and CHN analyses. Thermogravimetric analysis (TGA) revealed that the polymers have high thermal stability. A semicrystalline behavior was noticed for polymers by wide‐angle X‐ray diffraction (WAXD) and differential scanning calorimetry (DSC). © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 1198–1204, 2006

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