Functionalized Multi-Walled Carbon Nanotubes with Vitamin C Structures: Characterization and Fabrication of Thiazole Containing Poly(Amide-Imide)-based Composites

Abstract

The functionalization of multi-walled carbon nanotubes by ascorbic acid (vitamin C) was carried out. Then, functionalized multi-walled carbon nanotubes were dispersed throughout a poly(amide–imide) matrix by ex situ technique with 5, 10, and 15% loading by weight. The composite hybrid films were prepared by a solvent casting method. It was found that the functionalization of multi-walled carbon nanotubes could improve their dispersion and interfacial adhesion to the poly(amide–imide) matrix as proved by field emission scanning and transmission electron microscopy techniques. The modulus, tensile strength, and the thermal stability of the composites were improved in spite of excellent multi-walled carbon nanotube dispersion in the matrix.