Characterization of chemical coating on the functionalized carbon nanotubes.
Characterization of chemical coating on the functionalized carbon nanotubes.
复制标题
功能化碳纳米管化学涂层的表征。
DOI：
10.1017/s1431927609095087
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Oki,A
中科院分区：
文献类型：
--
作者：
Luo,ZP;Littleton,RL;Kim,H;Adams,L;Carson,L;Soboyejo,N;Oki,A
Carbon nanotubes (CNTs) have received considerable attention due to their extraordinary properties of strength, toughness, as well as thermal and electrical conductivities. They are ideal fillers for polymer nanocomposites to enhance the composite physical and mechanical properties. In order to overcome the problem of tangling caused by CNT intrinsic van der Waals forces during the composite fabrication, a chemical functionalization process was introduced [1-4] to achieve a better dispersion degree, which is a critical factor dominating the composite performance [5]. However, the coating microstructure remains unidentified. In this work, we present a characterization of the chemical coating on the functionalized CNTs using analytical TEM.The experimental material, CNT-COCl, was oxidized with mixed sulfuric and nitric acids, and then further reacted with thionyl chloride SOCl2. The CNT sample was deposited on Cu grids coated with carbon support film, and observed in a FEI Tecnai G2 F20 at 200 kV, equipped with a Fischione ultra-high resolution STEM HAADF detector, Oxford instruments EDS detector, and a post-column Gatan Image Filter (GIF).
