BU Luxia,LI Jingjing,GAO Linlin,et al.Dispersion of Multi-Walled Carbon Nanotubes in Solution with Surfactant SDBS[J].Plating & Finishing,2019,(7):10-13.[doi:10.3969/j.issn.1001-3849.2019.07.003]
SDBS对多壁碳纳米管悬浮液分散性的影响
- Title:
- Dispersion of Multi-Walled Carbon Nanotubes in Solution with Surfactant SDBS
- 关键词:
- 碳纳米管; 十二烷基苯磺酸钠（SDBS）; 离子液体; 分散性
- 文献标志码:
- A
- 摘要:
- 以十二烷基苯磺酸钠（SDBS）为分散剂，氯化胆碱-丙二酸类离子液体为溶剂，通过超声分散处理多壁碳纳米管，制备了分散性良好的多壁碳纳米管悬浮液。采用紫外-可见分光光度法和粒径测试考察了SDBS对多壁碳纳米管悬浮液分散性的影响。结果表明，在多壁碳纳米管悬浮液中，当SDBS的浓度为1.2 mmol?L-1左右时，悬浮碳纳米管的浓度最大，约为初始浓度的89 %。悬浮液中多壁碳纳米管的平均粒径随着SDBS的浓度的增大而逐渐降低，在SDBS的浓度大于1.0 mmol?L-1时，下降趋势变缓慢。添加SDBS后的多壁碳纳米管悬浮液的稳定性显著提高，192 h后基本趋于稳定。
- Abstract:
- The homogeneous and stable dispersions of multi-walled carbon nanotubes (MWCNTS) in solution were prepared by ultrasonic dispersing treatment with sodium dodecyl benzene sulfonate (SDBS) as dispersant and choline chloride-malonic acid ionic liquid analogs as solvent. The effects of SDBS on the dispersion of MWCNTS suspensions were investigated by UV-visible spectrophotometry and particle size measurement. The results showed that when the concentration of SDBS in the MWCNTS suspensions was about 1.2 mmol?L-1, the concentration of suspended carbon nanotube was the largest, about 89 % of the initial concentration. With the increase of SDBS concentration, the average particle size of MWCNTS in the solvents decreased gradually, and when the SDBS concentration was above 1.0 mmol?L-1, the decline trend became slowly. The stability of MWCNTS suspensions with surfactant SDBS was significantly improved, and the as-prepared suspensions can basically stabilize after 192 h.
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备注/Memo
收稿日期： 2019-05-04；修回日期： 2019-05-25
基金项目： 天津市大学生创新训练项目（201810061239）