Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.4322/polimeros.2013.091
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Synthesis and Characterization of Novel Polyamide-ethers Based on Bis-imidazole Containing Bulky Aryl Pendant Groups

Saadati, Seyed Mahdi; Mosslemin, Mohammad Hossein

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Abstract

Abstract: A series of novel polyamide-ethers (PAEs) based on bis-imidazole containing bulky aryl pendant groups was prepared by direct polycondensation of a diamine, 4-(1-(4-(4-(2-(4-aminophenyl)-4,5-diphenyl-1H-imidazol-1-yl)phenoxy)phenyl)-4,5-diphenyl-1H-imidazol-2-yl)benzenamine (DABI), and various dicarboxylic acids. All the resulting polyamide-ethers were amorphous with inherent viscosities ranged from 0.52 to 0.61 dL/g and were readily soluble in many organic solvents which could be solution-cast into transparent and tough films. The glass transition temperatures (Tg) of these polymers were affected considerably by their chemical structure and ranged from 230 to 310 °C. They had useful levels of thermal stability associated with relatively high temperatures of 10% weight loss (T10) in the range of 329–399 °C in air atmosphere.

Keywords

Polyamide-ether, Polycondensation, Solubility, Thermal properties, Bis-imidazole

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