Coefficient of thermal expansion of carbon nanotubes measured by Raman spectroscopy
Coefficient of thermal expansion of carbon nanotubes measured by Raman spectroscopy
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DOI：
10.1063/1.4864056
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发表时间：
2014-02-03
影响因子：
4
通讯作者：
Monthioux, Marc
中科院分区：
文献类型：
--
作者：
Deng, Libo;Young, Robert J.;Monthioux, Marc
采用拉曼光谱法测定了豆荚源双壁碳纳米管及其宿主空单壁碳纳米管的热膨胀系数。这是通过测量环氧树脂基复合材料中纳米管的拉曼带频率的依赖性，并考虑应变和温度对拉曼带的影响来进行的。两种类型的纳米管在室温下均显示出约+2 × 10（-5）K-1的正热膨胀，并且SWCNT的CTE不受内壁纳米管的引入的影响。它还表明，温度诱导的拉曼谱带位移可以用来确定的CTE和基体聚合物的玻璃化转变温度。(C)2014 AIP出版有限责任公司。
The coefficient of thermal expansion (CTE) of peapod-derived double-walled carbon nanotubes and their host empty single-walled carbon nanotubes (SWCNTs) was determined using Raman spectroscopy. This was performed by measuring the dependence of Raman band frequency of the nanotubes in epoxy resin matrix composites and considering the effects of both the strain and temperature on the Raman bands. Both types of nanotubes show positive thermal expansion at room temperature of around +2 x 10(-5) K-1, and the CTE of the SWCNTs was unaffected by the introduction of the inner wall nanotubes. It was also demonstrated that the temperature-induced Raman band shifts can be used to determine both the CTE and glass transition temperature of the matrix polymers. (C) 2014 AIP Publishing LLC.