Article
Low-concentration aqueous solutions of undecenoic acid and sodium undecenoate
Fecha
1999Autor
Rodriguez, J.L.
Schulz, P.C.
Puig, J.E.
Institución
Resumen
The behaviors of low-concentration aqueous solutions of 10-undecenoic acid and its sodium salt were studied by several techniques. The acid does not have a critical micelle concentration, but gives an emulsion of very small droplets at (0.8-1) x 10-4 mol dm-3. The emulsion was clearly visible by eye at 0.002 mol dm-3. The sodium salt has a stepwise aggregation process, giving premicellar aggregates at 0.023 � 0.008 mol dm-3, which grow to form micelles at 0.117 � 0.007 mol dm-3. The compositions of the solution and the micelles were also studied.