Design and Characterization of Chiral and Thermally Stable Nanostructure Poly(amide-imide)s Containing Different Trimellitylimido-Amino Acid-Based Diacids and 4,4′-Methylenebis(3-chloro-2,6-diethylaniline) Units

Abstract

In this study new chiral nanostructure poly(amide-imide)s (PAI)s were synthesized via direct polycondensation of different trimellitylimido-amino acid-based diacids and 4,4 0 -methylenebis(3-chloro-2,6-diethylaniline), using tetra-n-butylammonium bromide and triphenyl phosphite as a green media. The formation of these nanostructure PAIs was confirmed by 1 H-NMR, Fourier transform infrared spectroscopy, specific rotation, elemental analysis, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and thermo gravimetric analysis techniques. The FE-SEM micrographs and XRD patterns showed that, the obtained PAIs are nanostructured with different shapes and noncrystalline polymers.

Performance evaluation of fructose-functionalized multiwalled carbon nanotubes/biodegradable poly(amide–imide) based on N,N′-(pyromellitoyl)-bis-S-valine bionanocomposite

“…The substitution of 4-toluenesulfonyl chloride/ dimethylformamide/pyridine as a reaction medium by an ionic liquid (IL), namely tetrabutylammonium bromide (TBAB) as a green solvent, gave good results. 23 ILs are chemicals that can be used as solvents and catalysts in green chemistry methods. Their nonvolatile nature, stability at high temperature, and easy separation make the ILs excellent candidates for using as polycondensation reaction medium.…”

“…Their nonvolatile nature, stability at high temperature, and easy separation make the ILs excellent candidates for using as polycondensation reaction medium. [23][24][25][26][27][28] So, in this study, PAI was synthesized using a simple, fast, and safe polymerization method; N,N 0 -(Pyromellitoyl)-bis-Svaline diacid (4) as an optically active diacid with 4,4 0 -methylene-bis(3-chloro-2,6-diethylaniline) as an aromatic diamine (5) was condensed in molten TBAB in the presence of triphenyl phosphite. 21…”

Morphological and Thermal Properties of Poly(amide-imide)/ZnO Nanocomposites Derived from 4,4′-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) and 3,5-diamino-N-(4-hydroxyphenyl)benzamide

“…Structural modifications improve their processing properties. One of these modifications is the preparation of copolymers such as PAIs, which are high-performance materials with good compromise between thermal stability and process ability when compared to polyamides or polyimides of analogous structure [22][23][24][25] . PAIs have been widely employed as adhesives, electronic materials, composite materials, fiber, and film materials.…”

An Investigation into the Effects of Different Nanoclays on Polyurethane Nanocomposites Properties

“…Polymeric nanocomposites as a branch of new technology have become important and a large body of literature has been published in this field [1][2][3][4][5][6][7][8][9][10] . Polyurethane elastomers have been widely used in some of industrial applications because of their high abrasion resistance, loading behavior, tensile properties and environment stability [11][12][13][14][15][16][17][18][19][20][21] .…”