Itaconic acid–doped polyaniline/MWCNTs nanocomposites for microwave absorbing materials

Abstract

Itaconic acid–doped polyaniline (PANI)/multiwalled carbon nanotubes (MWCNTs) nanocomposites were prepared via in situ polymerization for microwave absorbing materials. The interaction between PANI and MWCNTs and the influence of MWCNTs loadings on the properties of their nanocomposites were investigated by various measurements, such as Fourier transform infrared spectroscopy, X-ray diffraction, field-emission scanning electron microscopy, thermogravimetric analysis, and network analyzer. The electron delocalization in the composites is associated with the π–π* interaction between the surface of MWCNTs and the quinoid rings of PANI. The conductivity, crystallinity, and thermal stability of the nanocomposites with different morphologies have been increased due to the introduction of different MWCNTs loadings. Moreover, the microwave-absorbing property of itaconic acid-doped PANI in the reflection loss value and in different frequency areas is improved by the incorporation of MWCNTs. The nanocomposites are promising candidates in microwave absorption applications.

EVA copolymer loaded with PAni/CNT/GNP hybrids: A flexible and lightweight material with high microwave absorption

“…Improvement of the conductivity has also been reported in the literature for the system involving PAni prepared in situ in the presence of CNTs and/or GNPs 38 . According to the literature, GNPs and CNTs act as electron acceptors and the growing PAni chain as electron donors, improving the electrostatic interaction between them 39 …”

“…38 According to the literature, GNPs and CNTs act as electron acceptors and the growing PAni chain as electron donors, improving the electrostatic interaction between them. 39…”