Synthesis of carbon nanotube/polyaniline composite nanotube and its microwave permittivity

被引：12

作者：

Zhao, DL ^{[1
]}

Zeng, XW ^{[1
]}

Shen, ZM ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Inst Carbon Fiber & Composites, Minist Educ, Key Lab Sci & Technol Controllable React, Beijing 100029, Peoples R China

来源：

ACTA PHYSICA SINICA | 2005年 / 54卷 / 08期

关键词：

carbon; nanotubes; polyaniline; microwave permittivity; microwave absorbent;

D O I：

10.7498/aps.54.3878

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A carbon nanotube/polyaniline composite nanotube with a diameter of 50-80 nm has been prepared. The carbon nanotubes encapsulated by polyaniline (PANI) with a thickness of 20-30 nm have been synthesized by in-situ emulsion polymerization. The microwave permittivity of the carbon nanotube/polyaniline composite nanotubes has been investigated in the frequency range of 2-18 GHz. The real part (epsilon') and imaginary part (epsilon") of the complex permittivity of carbon nanotube/polyaniline composite nanotube change little, as compared with those of carbon nanotubes at frequencies 2-18 GHz. The epsilon' and epsilon" of the carbon nanotube/polyaniline composite nanotube are small at low frequencies, which make it easy to match the impedance of free-space in the design of microwave absorbing materials. The dissipation factor tan delta (epsilon"/epsilon') of carbon nanotube/polyaniline composite nanotube is high. So the carbon nanotube/polyaniline composite nanotube is a good microwave absorbent.

引用

页码：3878 / 3883

页数：6