In binary systems, the influence of different surfactants in carbon nanotube (CNT) dispersion and the dispersion efficiency remain unclear. This study compared CNT dispersion by sodium dodecyl benzene sulfonate (SDBS, small molecule), Triton X-100 (TX 100, large molecule), and their mixtures in single and mixed surfactant systems. A synergistic effect between SDBS and TX 100 was observed for CNT dispersion. The enhancement adsorption of TX 100 by SDBS indicated that SDBS likely acted as a trigger in the “unzippering” mechanism due to its small molecular size. The actual dispersion efficiency of CNT being higher than the theoretical value also proved the trigger effect of SDBS. However, when TX 100 concentration exceeded its critical micelle concentration, the synergistic effect disappeared. This result indicated that the trigger effect of SDBS probably did not occur because TX 100 directly encapsulated CNT in the form of large micelles.

在二元体系中，不同表面活性剂对碳纳米管（CNT）分散体和分散效率的影响尚不清楚。本研究比较了十二烷基苯磺酸钠（SDBS，小分子）、Triton X-100（TX 100，大分子）以及它们在单一和混合表面活性剂体系中的混合物对 CNT 的分散。对于 CNT 分散，观察到 SDBS 和 TX 100 之间的协同效应。SDBS 对 TX 100 的增强吸附表明，由于其小分子尺寸，SDBS 可能在“解链”机制中起触发作用。CNT的实际分散效率高于理论值也证明了SDBS的触发效应。然而，当TX 100 浓度超过其临界胶束浓度时，协同效应消失。