材料科学
碳纳米管
退火(玻璃)
化学工程
纳米管
纳米技术
复合材料
作者
Rajyashree Sundaram,Takeo Yamada,Kenji Hata,Atsuko Sekiguchi
标识
DOI:10.1016/j.matpr.2018.08.157
摘要
Abstract We propose vacuum annealing to purify carbon nanotube wires (CNTWs) manufactured from surfactant dispersions by removing residual carbonaceous impurities (surfactant and solvent) included during wire-spinning. We analysed the CNTW purity post-annealing vs. treatment temperature and time by scanning electron microscopy, Raman spectroscopy, and thermogravimetry. Our results suggest that maximal purification is achieved after annealing at 800 °C (for ≥3 h) or at 1000 °C (for ≥1 h). The optimally purified wires show higher CNT content and G/D (∼93 wt% and >30, respectively) than the untreated wires (∼71 wt% and 25, respectively).
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