Effective amino-functionalization of carbon nanotubes for reinforcing epoxy polymer composites
Effective amino-functionalization of carbon nanotubes for reinforcing epoxy polymer composites
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DOI：
10.1088/0957-4484/17/6/003
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发表时间：
2006-03
期刊：
影响因子：
3.5
通讯作者：
Shiren Wang;Zhiyong Liang;Tina Liu;Ben Wang;Chuck Zhang
中科院分区：
文献类型：
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作者：
Shiren Wang;Zhiyong Liang;Tina Liu;Ben Wang;Chuck Zhang
研究了一种有效的功能化方法，以充分利用碳纳米管和环氧聚合物的优异性能用于复合材料应用。采用重氮化法将环氧树脂固化剂EPI-W接枝到单壁碳纳米管上。采用傅里叶变换红外光谱、拉曼光谱、差示扫描量热、动态力学分析和热重分析等方法对功能化效果进行了表征。官能化程度估计为1/50的碳纳米管框架。当官能化碳纳米管的含量仅为0.5wt%时，纳米复合材料的弹性模量提高了24.6%，而未官能化碳纳米管增强复合材料的弹性模量提高了3.2%。这为实现纳米管增强环氧树脂复合材料的工业化应用提供了一条有效途径。
An effective functionalization method was investigated to take full advantage of the exceptional performance of both carbon nanotubes and epoxy polymer for composite application. Epoxy polymer curing agent, EPI-W, was grafted to the single-walled carbon nanotubes through diazotization. Fourier transformed infrared spectroscopy, Raman spectroscopy, differential scanning calorimetry, dynamical mechanical analysis and thermo-gravimetric analysis were performed to characterize the functionalization effect. The degree of functionalization was estimated to be 1 in 50 carbons in the nanotube framework. The elastic modulus of the nanocomposite was enhanced 24.6% with only 0.5 wt% loading of functionalized carbon nanotubes, in contrast to the 3.2% increase of un-functionalized carbon nanotube reinforced composite. This significant improvement suggested an effective way to realize an industrial application of nanotubes reinforcing epoxy composite.