Optimizing functionalization of multiwalled carbon nanotubes using sodium lignosulfonate

被引：0
|
作者：
Youngjin Jeong
Junsuk Kim
Geon-Woong Lee
机构：
[1] Soongsil University,Department of Organic Materials and Fiber Engineering
[2] Korea Electrotechnology Research Institute,undefined
来源：
Colloid and Polymer Science | 2010年 / 288卷
关键词：
Carbon nanotubes; Functionalization; Sodium lignosulfonate; Dispersion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Multiwalled carbon nanotubes (MWCNTs) were functionalized with sodium lignosulfonate (SLS) at various SLS/MWCNT ratios, and the solubility of the functionalized MWCNTs was examined using ultraviolet-visible (UV-Vis) spectroscopy. Then, the effects of SLS on the dispersion and conductivity of MWCNTs were investigated. A calibration curve was constructed to measure the concentration of MWCNTs in water using the absorbance measured from UV-Vis spectroscopy. Using the curve, the change in the functionalized MWCNT concentration was investigated as a function of time. The results showed that the solubility of the MWCNTs did not increase significantly with further increases in SLS after the appropriate amount of SLS was employed. Excessive use of SLS rather decreased the conductivity of functionalized MWNTs. Also, the solubility of MWCNTs was influenced by dispersing method even when the same amount of SLS was used. Our method could functionalize the MWCNTs with a small amount of SLS, and the solution could remain stable for lengthy periods of time.
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页码：1 / 6
页数：5
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