期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 224, 期 -, 页码 61-68出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2017.07.006
关键词
Carbon nanotubes; CNT synthesis; Cotton fibers; Dielectric properties; Electromagnetic wave absorption
资金
- Army Research Office (ARO) [W911NF-15-1-0483]
- Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0367]
- National Science Foundation (NSF) LASIGMA in the United States [EPS-1003897, NSF92010-15-RII-SUBR]
In this paper, we report a new method for synthesizing carbon nanotubes (CNTs) and other carbon nanostructures such as carbon nanoparticles (CNPs) through catalytic thermolysis of natural cotton fibers. Using the new method, long CNTs (L-CNTs), which could reach to 20 tm or longer, can be readily synthesized from natural cotton fibers under hydrogen environment at a thermolysis temperature around 1200 degrees C. The analysis of the microstructure of synthesized L-CNTs showed that the CNT growth from the catalytic thermolysis of cotton fibers may not undergo a carbon-containing gas generation step that is different from most of other growth methods. We further studied the dielectric and electromagnetic wave (EMW) absorption properties of synthesized CNTs by embedding them in a epoxy matrix. The measurement results show that complex dielectric permittivity epsilon and EMW absorption ratio of the composites strongly depend on CNT loading in the frequency range from 8 to 26 GHz. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据