Effects of Cetylpyridinium Chloride on Phase and Rheological Behavior of the Diluted C12E4/Benzyl Alcohol/Water System

The influence of a small amount of cetylpyridinium chloride on the phase diagram of the diluted C12E4/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...

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Bibliographic Details
Published inJournal of colloid and interface science Vol. 227; no. 1; pp. 171 - 175
Main Authors Montalvo, Gemma, Rodenas, Elvira, Valiente, Mercedes
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.07.2000
Elsevier
Subjects
cationic surfactant
Chemistry
Exact sciences and technology
General and physical chemistry
lamellar phase
micelles
nonionic surfactant
phase diagram
rheology
Surface physical chemistry
Surface-active agents: properties
nonionic surfactant
phase diagram
rheology
lamellar phase
cationic surfactant
micelles
Water
Viscosity
Ternary system
Phase diagram
Iminium compounds
Non ionic surfactant
Cationic surfactant
Micelle
Benzyl alcohol
Experimental study
Ethylene oxide polymer
Lamellar structure
Aqueous solution
Rheological properties
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Summary:The influence of a small amount of cetylpyridinium chloride on the phase diagram of the diluted C12E4/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.
ISSN:0021-9797
1095-7103
DOI:10.1006/jcis.2000.6872