Characterizations and properties of oligoazomethines (including CH3 and NO2 groups) char composites

In this research, the oligomers were synthesized by the polycondensation of diamins (1,4-diamino-2-nitrobenzene and 2,5-diaminotoluene sulfate) with dialdehydes (terephtaldehyde 4,4'-diformylbiphenyl, bis(4-formylphenyl) ether and p-phenylene diacrolein). In this study, the oligoazomethines (OAMs) were studied using IR and UV-visible spectra and X-ray diffraction. The initial degradation temperatures (IDT) determined from TGA of OAMs were in the range of 225-270 degrees C indicating their good thermal stability. The conductivity measurements of OAMs were carried out with an electrometer using four-point probe technique. The highest conductivity increase among all the oligoazomethine/char composites was observed for the OAMs composites formed with 30% char ratio. (c) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.