Synthesis, characterization, and properties of poly(amide-imide)s from a new diimide-diacid by direct polycondensation with various diamines
Article first published online: 12 APR 2011
Copyright © 2011 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 121, Issue 6, pages 3679–3688, 15 September 2011
How to Cite
Ghaemy, M., Movagharnezhad, N. and Khajeh, S. (2011), Synthesis, characterization, and properties of poly(amide-imide)s from a new diimide-diacid by direct polycondensation with various diamines. J. Appl. Polym. Sci., 121: 3679–3688. doi: 10.1002/app.34175
- Issue published online: 31 MAY 2011
- Article first published online: 12 APR 2011
- Manuscript Accepted: 16 JAN 2011
- Manuscript Received: 27 OCT 2010
- direct polycondensation;
- thermal properties
A new diimide-diacid, 2,2′-(5-(4-(4-(4,5-diphenyil-1H-imidazol-2-yl)phenoxy)phenylcarbam-oyl)-1,3-phenylenebis(1,3-dioxoisoindoline-5-carboxylic-acid)(DADA), was synthesized from the reaction between trimellitic anhydride and a new diamine, N-(4-(4-(4,5-diphenyl-1H-imidazole-2-yl)phenoxylphenyl)-3,5-diaminobenzamide(NIDA). The direct polycondensation of DADA with various diamines was carried out in NMP in the presence of triphenylposphite and pyridine as condensing agents. The resulting poly(amide-imide)s (PAIs) were amorphous, readily soluble in many polar aprotic solvents and showed inherent viscosities of 0.35–0.47 dL/g. According to thermal analysis, these polymers exhibited glass transition temperatures (Tgs) in the range of 207–271°C, and their initial decomposition temperature (Ti) varied from 260 to 330°C and temperature of 10% weight loss (T10) from 325 to 520°C in N2. These polymers in NMP solution exhibited strong UV–vis absorption maxima at 320 nm and their fluorescence emission peaks appeared around 425–450 nm. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.