The influence of the addition of the cationic surfactant cetylpyridinium chloride (CPyCl) on the structure of the different phases of the ternary surfactant system C 12 E 4 /benzyl alcohol/water in the dilute region has been studied by means of small angle neutron scattering (SANS) and freeze-fractu
Effects of Cetylpyridinium Chloride on Phase and Rheological Behavior of the Diluted C12E4/Benzyl Alcohol/Water System
โ Scribed by Gemma Montalvo; Elvira Rodenas; Mercedes Valiente
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 89 KB
- Volume
- 227
- Category
- Article
- ISSN
- 0021-9797
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โฆ Synopsis
The influence of a small amount of cetylpyridinium chloride on the phase diagram of the diluted C 12 E 4 /benzyl alcohol/water system is studied. The presence of the ionic surfactant results in the stabilization of the vesicles in relation to the open bilayers. The bilayer structures are less sensitive to shear effects than for the system without cationic surfactant. Moreover, the formation of the mixed micelle phase is also favored. The transition from spherical to rod micelles has been detected from viscosity measurements. The micelles located close to the two-phase region (at the lower amount of cationic surfactant) are the largest and most flexible micelles.
๐ SIMILAR VOLUMES
The phase diagram of the ternary dodecyltetraethylene glycol tion at a fixed surfactant content. L al and L ah are birefrigent, (C 12 E 4 )/benzyl alcohol/water system with a surfactant concentra-and lamellar phases, L / a and L 3 , are optically isotropic, with tion of up to 0.2 M was determined. W