New polyamides and polyesteramides incorporated with bis(carboxy‐substituted) hydrazines: Synthesis and characterization
2011
The present article endeavors to synthesize new polyamides via direct polycondensation of various diamines [hexamethylene diamine, ρ-phenylene diamine, 2,5-bis(m-aminobenzylidene) cyclopentanone, and 2,6-bis(m-aminobenzylidene)cyclohexanone] with different bis(carboxy-substituted) hydrazines such as [1,2-bis(3-carboxy acrylyl)hydrazine and 1,2-bis(3-carboxybenzoyl) hydrazine]. The polycondensation reaction of 1,2-bis(3-p-hydroxyanilide acrylyl) hydrazine with the same bis(carboxy-substituted) hydrazines gave polyester amides. The polycondensation process was run in the presence of CaCl2, triethylphosphite, and pyridine as a catalyst. These polymers were characterized by FTIR, 1H-NMR, solubility, TGA, DSC, X-ray, mechanical properties, and electrical conductivity. The electrical conductivity measurements showed that all new polymers show promise as insulators. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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