Synthesis and properties of organosoluble poly(amide imide imide)s based on tetraimide dicarboxylic acid condensed from 4,4′‐(hexafluoroisopropylidene)diphthalic anhydride, 4,4′‐oxydianiline, and trimellitic anhydride and various aromatic diamines

Abstract

A novel tetraimide dicarboxylic acid was synthesized with the ring‐opening addition of 4,4′‐(hexafluoroisopropylidene)diphthalic anhydride, 4,4′‐oxydianiline, and trimellitic anhydride in a 1/2/2 molar ratio in N‐methyl‐2‐pyrrolidone followed by azeotropic condensation to tetraimide dicarboxylic acid. A series of poly(amide imide imide)s (PAIIs) with inherent viscosities of 0.8–1.1 dL/g were prepared from tetraimide dicarboxylic acid with various aromatic diamines by direct polycondensation. Most of the PAIIs were readily soluble in a variety of amide polar solvents and even in less polar m‐cresol and pyridine. Solvent‐cast films had tensile strengths ranging from 99 to 106 MPa, elongations at break ranging from 8 to 13%, and initial moduli ranging from 2.0 to 2.3 GPa. The glass‐transition temperatures of these PAIIs were recorded at 244–276 °C. They had 10% weight losses at temperatures above 520 °C in air or nitrogen atmospheres. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 1092–1102, 2002

Novel flame retardant zirconia-reinforced nanocomposites containing chlorinated poly(amide-imide): synthesis and morphology probe

“…Poly(amide-imide)s (PAIs) encompass both amide and heterocycle imide structures along the main chain of the polymer backbone have surfaced as alternative materials to polyamides and polyimides mainly because they exhibit much better processability contrasted to the latter polymers [25]. These macromolecules have excellent mechanical properties, high-temperature resistance, noteworthy oxidative stability and hydrogen bonding interaction, being a promising matrix candidate for hybrid materials [26][27][28][29].…”

Synthesis of Hyperbranched Aromatic Poly(amide−imide): Copolymerization of B‘B2 Monomer with A2 Monomer

“…Linear polyamides and polyimides are well-known as high-performance polymeric materials. , Their hyperbranched analogues have been prepared by the self-polymerization of AB 2 type monomers − or more recently by copolymerization methods. − Aromatic poly(amide−imide)s are a class of high-performance polymers which may combine the advantages of polyamides and polyimides; the resulting polymers should possess high thermal stabilities, coupled with good mechanical and chemical properties. , To the best of our knowledge, there has been no report regarding the preparation of hyperbranched aromatic poly(amide−imide)s. In this paper, we report the synthesis of a new hyperbranched poly(amide−imide) by copolymerization of an unsymmetrical B‘B 2 type monomer with an A 2 type monomer. In the B‘B 2 monomer, there are one anhydride and two carboxylic groups, while in the A 2 monomer, there are two amino functionalities.…”

Synthesis and characterization of fluorinated poly(amide imide)s derived from 1,4‐bis(2′‐trifluoromethyl‐4′‐trimellitimidophenoxy)benzene and aromatic diamines

“…PAIs based on trimellitic acid or its derivatives have attracted considerable attention because of their high temperature tolerance, outstanding mechanical properties, and well‐established chemistry 19–23. However, improvements in their processability, thermal stability, and dielectric and electric insulating properties are still required for high‐tech applications in, for example, the microelectronics and aerospace industries.…”