Phase behavior of iridescent phases with calcium dodecyl sulfate, octanol or decanol, and water, and the effect of the presence of sodium ions

Autor:	R Hammel, G Platz, A Zapf
Rok vydání:	2001
Předmět:	chemistry.chemical_classification Octanol Spinodal decomposition Sodium Inorganic chemistry Analytical chemistry chemistry.chemical_element chemistry.chemical_compound Colloid and Surface Chemistry chemistry Lamellar phase Phase (matter) Lamellar structure Sodium dodecyl sulfate Counterion
Zdroj:	Colloids and Surfaces A: Physicochemical and Engineering Aspects. :213-225
ISSN:	0927-7757
Popis:	The influence of sodium counterions on the highly swollen lamellar phases in the system consisting of calcium dodecyl sulfate (CDS), octanol, and water was investigated at 25°C. Highly dilute, iridescent lamellar phases could be obtained with CDS/sodium dodecyl sulfate (SDS) weight ratios above 85/15. There is no continuous transition from the swollen lamellar phase to the more highly dilute iridescent phase, instead, there is a miscibility gap with coexisting lower iridescent and upper swollen lamellar phases which is more pronounced in systems containing sodium counterions. Also, the CDS/decanol/water system was investigated, in which we found a novel, highly swollen lamellar and even an iridescent phase in an extremely narrow region in the phase diagram at 25°C. In contrast to the pentanol-octanol systems, the decanol system displays an L3 phase at elevated, but not at room temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::58c34e36da2660e96c19d0dc71b96a3f https://doi.org/10.1016/s0927-7757(01)00549-0 Zobrazit plný text záznamu Full Text from ScienceDirect