Abstract
The normal spherical micelles formed by sodium p-(1-pentylheptyl)benzenesulfonate have Guinier radii (R/sub G/), as determined by small-angle neutron scattering (SANS), of 13.7 to 16.6 A in the concentration range 0.0099 to 0.0991 M in D/sub 2/O at 45/sup 0/C. Scattering curves for the more concentrated solutions show an interaction peak which is undoubtedly due to micelle-micelle repulsion. A longer-chain homologue, sodium p-(1-heptylnonyl)benzenesulfonate (also called Texas No. 1), for which there has previously been some question about micelle formation, is also shown to form small, normal micelles (R/sub G/ = 17 A) in aqueous solution.
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