Abstract

The kinetics of vesicle formation from hydrotrope/lecithin micelles in the system of lecithin, sodium xylenesulfonate (SXS), and water were studied via the stopped-flow process in conjunction with light scattering. The essential phases in the system are a micellar (L1) phase and a lamellar liquid-crystalline (LLC) phase. Based upon light scattering and conductance measurements in the L1 phase, the ratio of SXS to lecithin molecules in the micelles was approximately 1. The results of the stopped-flow process showed the mechanism of formation for the vesicles, which lie in equilibrium between the L1 and LLC phases, to be by the agglomeration of fragments.

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