Magnetic heat resistant poly(amide-imide) nanocomposite derived from bisphenol A: Synthesis and properties

Abstract

New magnetic and heat resistant poly(amide–imide) nanocomposite (PAIN) was prepared from Fe3O4 nanoparticles and poly(amide-imide) (PAI) in a solution of N-methyl-2-pyrrolidone. New PAI derived from bisphenol A containing aryl sulfone and ether moiety was synthesized from 2,2′-(4,4′-(4,4′-(propane-2,2-diyl)bis(4,1-phenylene))bis(oxy)bis(4,1-phenylene))bis(1,3-dioxoisoindoline-5-carboxylic acid) 5 as a new diacid and 4,4′-diaminodiphenyl sulfone by direct polycondensation reaction. Fe3O4 nanoparticles were prepared by coprecipitation method and characterized using Fourier transform infrared, X-ray diffraction, scanning electron microscopy (SEM), and vibrating samples magnetometer (VSM). The new poly(amide-imide)/Fe3O4 nanocomposite was characterized using SEM, FTIR, and VSM. The effect of Fe3O4 nanoparticles on the thermal properties of PAI was studied using thermogravimetric analysis and differential scanning calorimeter. POLYM. COMPOS., 34:1682–1689, 2013. © 2013 Society of Plastics Engineers