Novel chiral poly(amide-imide) nanocomposites reinforced with silicate layers and TiO 2 nanoparticles based on N -trimellitylimido- l -isoleucine

Abstract

In the present investigation, the goal was the preparation, characterization, and surface morphology of poly(amide-imide)/TiO₂/oganoclay nanocomposites. At first, an optically active poly(amide-imide) was synthesized from the polymerization reaction of N-trimellitylimido-l-isoleucine diacid with 4,4′-methylenebis(3-chloro-2,6-diethylaniline). The obtained polymer and TiO₂ nanoparticles were used to prepare poly(amide-imide)/TiO₂ nanocomposites through ultrasonic irradiation. Then, different amounts of organoclay were added to the poly(amide-imide)/TiO₂ nanocomposite system to obtain poly(amide-imide)/TiO₂/oganoclay nanocomposite. The resulting hybrids materials were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis techniques.