Activation of the spontaneous motion of a nitrobenzene droplet by chlorobenzene blending

作者：Matsushita Sachiko^*; Tanaka Shusuke; Yoshida Kaori; Kobayashi Kei; Tsuruki Yuta; Shibuya Yohey; Isobe Toshihiro; Nakajima Akira

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2012, 395: 233-239.

DOI：10.1016/j.colsurfa.2011.12.036

• Nonlinear phenomena
• Spontaneous oscillation
• Nonequilibrium phenomena
• Self-organization
• Surface tension
• Gel

The spontaneous motion of a nitrobenzene droplet combined with iodine and potassium iodide on an aqueous phase containing a cationic surfactant (stearyltrimethylammonium chloride) was activated by the addition of a small amount of chlorobenzene into the droplet. The highest speed of droplet motion was observed when it was composed of 60% nitrobenzene and 40% chlorobenzene. To explore the factors affecting this activation, for the oil phase, the density and viscosity, the solubility of the surfactant and the interfacial tension of the oil/aqueous phase for various concentrations of nitrobenzene-chlorobenzene were evaluated. The aggregates produced at the oil/water interface were subjected to elemental and melting point analyses. These results were carefully compared with those of previous theoretical studies. The analyses revealed that the balance of the kinematic properties of the oil phase solution and the rate of the electrophilic substitution reaction is the most important factor contributing to the activation.

• 出版日期2012-2-5