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Titolo:
Phase behavior of iridescent phases with calcium dodecyl sulfate, octanol or decanol, and water, and the effect of the presence of sodium ions
Autore:
Zapf, A; Hammel, R; Platz, G;
Indirizzi:
Univ Bayreuth, D-95440 Bayreuth, Germany Univ Bayreuth Bayreuth Germany D-95440 yreuth, D-95440 Bayreuth, Germany
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
, volume: 183, anno: 2001,
pagine: 213 - 225
SICI:
0927-7757(20010715)183:<213:PBOIPW>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
MESOSCOPIC STRUCTURES; SURFACTANT MIXTURES; LAMELLAR PHASES; SYSTEM; HEXANOL; PENTANOL; LIGHT;
Keywords:
iridescent phases; L-alpha phases; octanol; decanol; calcium dodecyl sulfate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Platz, G Univ Bayreuth, POB 101251, D-95440 Bayreuth, Germany Univ Bayreuth POB 101251 Bayreuth Germany D-95440 reuth, Germany
Citazione:
A. Zapf et al., "Phase behavior of iridescent phases with calcium dodecyl sulfate, octanol or decanol, and water, and the effect of the presence of sodium ions", COLL SURF A, 183, 2001, pp. 213-225

Abstract

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 degreesC. 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, theCDS/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 degreesC. In contrast to the pentanol-octanol systems, the decanol system displays an L-3 phase at elevated, but not atroom temperature. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 16:03:07