Microwave absorbing properties of polyaniline/multi-walled carbon nanotube composites with various polyaniline contents

作者：Ting T H^*; Jau Y N; Yu R P

来源：Applied Surface Science, 2012, 258(7): 3184-3190.

DOI：10.1016/j.apsusc.2011.11.061

• Polymer-matrix composites
• Electrical properties
• Magnetic properties
• Scanning/transmission electron microscopy

Polyaniline/multi-walled carbon nanotube (PANI/MWNT) composites were synthesized using in situ polymerization at different aniline/multi-walled carbon nanotube weight ratios (Ani/MWNT = 1/2, 1/1, 2/1 and 3/1) and introduced into an epoxy resin to act as a microwave absorber. The spectroscopic characterization of the process of formation of PANI/MWNT composites were studied using Fourier transform infrared spectroscopy, an ultraviolet-visible spectrophotometer, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and electron spin resonance. The microwave absorbing properties were investigated by measuring complex permittivity, complex permeability and reflection loss in the 2-18 and 18-40 GHz microwave frequency range, using the free space method. The results showed that the addition of PANI was useful for achieving a large absorption over a wide frequency range, especially for higher frequency values.

• 出版日期2012-1-15