Organosoluble and thermally stable polyimides derived from a new diamine containing bulky-flexible triaryl pyridine pendent group |
| |
Authors: | Mousa Ghaemy Soheila Khajeh |
| |
Institution: | (1) Faculty of Chemistry, University of Mazandaran, Babolsar, Iran; |
| |
Abstract: | A novel kind of aromatic diamine, N-(4-(4-(2,6-diphenyl pyridine-4-yl) phenoxy) phenyl)-3,5-diaminobezamide (DPDAB), was synthesized via aromatic nucleophilic substitution of 3,5-dinitrobenzoylchloride with 4-(4-(2,6-diphenylpyridine-4-yl)phenoxy)aniline (DPPA),
followed by palladium-catalyzed hydrazine reduction. This monomer was used to prepare polyimides (PIs) based on reaction with
several commerically avaiable tetracarboxylic dianhydrides such as pyromellatic dianhydride (PMDA), benzophenone tetracarboxylic
acide dianhydride (BTDA) and bicycle 2.2.2] oct-7-ene-2, 3,5,6-tetracarboxylic dianhydride (BCDA). These PIs had inherent
viscosity in the range of 0.34–0.76 dL/g and showed good solubility in various aprotic polar solvents. The glass-transition
tempratures (T
gs) of the PIs were in the range of 184–302°C, and showed high thermal stability with 10% weight loss in the temperature range
of 360–500°C under nitrogen atmosphere. |
| |
Keywords: | Polyimides Inherent viscosity Solubility Thermal stability DSC |
本文献已被 CNKI SpringerLink 等数据库收录! |
|