| 초록 |
Results for the solubilization of octane drops indicated that at low surfactant concentrations both interfacial resistance to mass transfer and diffusion of micelles carrying solubilized oil significantly influenced the solubilization rate. On the other hand, at high surfactant concentration of 3.75 wt%, spontaneously generated convection in the aqueous phase and Rybczynski-Hadamard circulation within the drops were observed. In such cases convection aided mass transport in the bulk phase and reduced the diffusional resistance, thus making interfacial resistance rate-controlling. The interfacial mass transfer coefficient was proportional to the first power of the surfactant concentration, which suggests that the adsorption/fusion and desorption/emission of micelles carrying oil molecules was the elementary molecular step within the kinetic mechanism that dictated the rates of solubilization. |
