Abstract
Abstract The micellar diffusion constants have been measured perpendicular to the optic axis in an aligned aqueous solution of decylammonium chloride and ammonium chloride, 10:1 by weight. The diffusion constants were calculated by measuring the evolution of the dye concentration along a microslide (.2 or .3 mm thick and 10 cm long) which had initially been half filled with solution containing a dye soluble only in the micelle. the other half being pure solution. Measurements were made in the isotropic phase for solutions containing 64 wt% water; in the nematic and smectic (neat soap) phases in solutions of 54 wt% water; and in the smectic phase of a 52 wt% water solution. The measured diffusion ranges from 4 × 10−7 cm2/sec to 7 × 10−7 cm2/sec. Taking into account the temperature dependence of the viscosity of water. we find Diw D<1Nm = D1 Sm.
Published Version
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