1977 Volume 50 Issue 12 Pages 3107-3110
Poly(2-vinylpyridine) partially quaternized with 1-dodecylbromide, a “polysoap,” sodium dodecyl sulfate (SDS), and dodecylpyridinium bromide (DPBr) in their micellar solutions were investigated by the spin-probe technique. It was found that the alkyl side chains in polysoap micelles associate more rigidly than in low-molecular surfactant micelles. This fact is attributed to the surface active groups covalently connected to long polymer chains in the polysoap molecule. By a recently developed method, the rotational correlation times of 2,2,6,6-tetramethyl-4-benzoyloxypiperidin-1-oxyl radical in SDS and DPBr micelles were found to be 5.9×10−10 and 3.5×10−10 s/rad, respectively. From the values of the isotropic hyperfine splitting constants, it was estimated that the DPBr micelle solubilizes the probe molecule at a more inner site of the hydrophobic portion than does the SDS micelle.
This article cannot obtain the latest cited-by information.