Synthesis and properties of novel brominated chiral polyamides derived from 5-[4-(2-tetrabromophthalimidylpropanoylamino) benzoylamino]isophthalic acid and aromatic diamines

A novel aromatic chiral dicarboxylic acid, 5-[4-(2-tetrabromophthalimidylpropanoylamino)benzoylamino]isophthalic acid was synthesized in three steps in high yield and purity starting from tetrabromophthalic anhydride and l-alanine.

Environmentally friendly functionalization of multiwalled carbon nanotube using ascorbic acid and efficient dispersion in chiral poly(ester-imide) containing 4,4′-thiobis(2-tert-butyl-5-methylphenol) moiety: thermal and morphological studies

Mallakpour S, Dinari M, Nabiyan A, Production of NiAl-layered double hydroxide intercalated with bio-safe amino acid containing organic dianion and its utilization in formation of LDH/poly(amide-imide) nanocomposites, Journal of Polymer Research, 22 (2015) 11.

The fabrication and characterization of nanocomposites containing new poly(amide–imide) based on 4,4-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) and carboxylic acid-functionalized multiwalled carbon nanotubes

Abstract

In this article, a nanostructure poly(amide–imide) (PAI) was prepared from the polymerization of 4,4′-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) with 3,5-diamino-N-(4-hydroxyphenyl)benzamide using tetra-n-butylammonium bromide as a green media and triphenylphosphite as a condensing agent. This methodology is safe and green since toxic and volatile organic solvents were eliminated. To obtain a homogeneous dispersion of multiwalled carbon nanotubes (MWCNTs) in the PAI matrix, carboxyl-modified MWCNT (CA-MWCNT) was used.

Preparation and properties of high-performance poly(amide–imide) composite films based on glucose-functionalized multiwalled carbon nanotubes

Abstract

Glucose has been covalently linked to multiwalled carbon nanotubes (MWCNTs). After that, the modified MWCNTs were added to a poly(amide–imide) (PAI) matrix. PAI-based composites were fabricated by an ex situ blending technique with 5, 10, and 15% of loading by weight. The composite hybrid films were prepared by a solvent-casting method. The structural properties of all hybrids have been characterized using a large variety of spectroscopic and microscopic techniques.

A facile, efficient, and green fabrication of nanocomposites based on l-leucine containing poly(amide-imide) and PVA-modified Ag nanoparticles by ultrasonic irradiation

Abstract

Silver nanoparticles capped by poly(vinyl alcohol) (AgNP@PVA) was prepared by reduction of AgNO3 in aqueous solution of PVA with the help of catalytic amount of tyrosine as reducing agent, under ultrasonic irradiation. Then, AgNP@PVA were embedded into the l-leucine containing poly(amide-imide) (PAI) matrix via sonication technique to prepare a completely green and environmentally friendly PAI/AgNP@PVA nanocomposites (NCs).

Novel ternary poly (vinyl pyrrolidone)/poly (amide-imide)/ZnO nanocomposite: Synthesis, characterization, thermal and optical performance

Abstract

The present work describes the synthesis and properties of polymer composites based on poly(vinyl pyrrolidone) (PVP) as polymer shell and poly(amide-imide)(PAI)/ZnO nanocomposite (ZNC) as efficient filler. At first, the alanine amino acid containing dicarboxylic acid was grafted on the surface of ZnO NPs. Then, modified ZnO (12 wt%) was incorporated into the PAI matrix under ultrasonic irradiations. The obtained hybrid ZNC showed high thermal stability and the size of the NPs in the TEM image of ZNC was about 31 nm.

Uncatalyzed Polymerization of Bistriazolinediones With Electron-Rich Aromatic Compounds Via Electrophilic Aromatic Substitution.

Abstract

The reaction of 4-substituted-1,2,4-triazoline-3,5-diones(4R-TD's), i.e., MeTD(4-methyl substituted) and PhTD(4-Phenyl substituted) with electron rich aromatic compounds were investigated. N,N-Dimethylaniline undergoes reaction instantaneously with MeTD and PhTD.