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

被引：91

作者：

Ting, T. H. ^{[1
]}

Jau, Y. N. ^{[1
]}

Yu, R. P. ^{[1
]}

机构：

[1] ROC Mil Acad, Dept Chem, Taipei, Taiwan

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 07期

关键词：

Polymer-matrix composites; Electrical properties; Magnetic properties; Scanning/transmission electron microscopy; ABSORPTION; NANOCOMPOSITES; EMERALDINE; OXIDATION; GEL;

D O I：

10.1016/j.apsusc.2011.11.061

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

引用

页码：3184 / 3190

页数：7

共 38 条

[1] Electromagnetic interference shielding mechanisms of CNT/polymer composites [J].