A Phase Diagram of theN-Cetylpiridinium Chloride/1-BuOH/Water Ternary System

Molinero, Isabel; Sierra, M. L.; Rodenas, E.

doi:10.1006/jcis.1997.4757

Cited by 17 publications

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“…The specific conductivity of the L phase samples with different wt % surfactant/wt % cosurfactant ratios against water content at higher surfactant content describes an inverted parabole (Figure ). We obtain the same kind of results as those found for other systems as CTAB/benzyl alcohol, CTAB/1,6-hexanediol, CPyCl/1-butanol, and SDS/PPG . The curve shape is due to the change in the medium polarity as it was shown for the CTAB/1,6-hexanediol/water system .…”

Section: Resultssupporting

confidence: 81%

Properties of the L and Lyotropic Phases in CTAB/Glycerol/Water and CTAB/Glyceraldehyde/Water Systems

1999

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The behavior of glycerol and glyceraldehyde as cosurfactants in the ternary CTAB/glycerol/water and CTAB/glyceraldehyde/water systems is studied. The phase diagrams only show the L and the hexagonal H1 phases. The L phase conductivity results at low surfactant concentration agree with no interaction between both cosurfactants and CTAB micelles. The rheological behavior of the L phase samples shows that the micelles at low surfactant content behave as Newtonian fluids. Whereas, samples close to the hexagonal phase show a shear-thinning behavior, consistent with the formation of cylindrical micelles, and in this case, there is a larger interaction between both cosurfactants with the CTAB micelles.

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Section: Resultssupporting

confidence: 81%

Properties of the L and Lyotropic Phases in CTAB/Glycerol/Water and CTAB/Glyceraldehyde/Water Systems

1999

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“…The isothermal phase diagram for the reported system was mapped out by preparing over 50 samples at different CPCl, oleic acid, and water weight percents. Due to the solubility limit of CPCl surfactant in water (E33 wt%), 51 the focus of this study is on water-rich corner of the ternary phase diagram (water Z70 wt%). To prepare samples for SAXS characterization and rheological measurements, the CPCl surfactant is dissolved in deionized water at different concentrations (up to 560 mM) and oleic acid is added the next day.…”

Section: Sample Preparationmentioning

confidence: 99%

Investigating the morphological transitions in an associative surfactant ternary system

et al. 2022

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Phase behavior and dielectric spectroscopy of the sodium dodecyl trioxyethylene sulfate/n‐butanol/water system

Wei

Zhao

et al. 2003

Chin. J. Chem.

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The phase diagram of the ternary system of sodium dodecyl trioxyethylene sulfate ( SDES )/n-butanoVwater is obtained at IntroductionIt is well known that surfactants in an aqueous solution could form micelles at a concentration higher than the critical micelle concentration (cmc) . Knowledge of alcohol solubilization in aqueous micelle solutions is important in understanding the aggregation behavior of such systems and is relevant to several industrial processes.' Many studies have been reported on phase behavior of ternary systems of ionic surfactant, alcohol, and water. '-' Generally, in the case of short chain alcohol, a transparent, isotropic, and low-viscosity phase appears extending from the water corner to the alcohol comer, which is called L phase. This region divides into two subregions, L1 and Lz, namely normal micelles and reverse micelles . Conductivity measurements can determine different microstructures in L phase of an ionic surfactant system. Dielectric Relaxation Spectroscopy (DRS) is a noninvasive and rapid method for the structural characterization and quality control of materials, because it only needs a small a. c . voltage and it is very sensitive to molecular motion and structure.' DRS is an effective tool to probe the physicochemical properties and inner structure of a system. It has been successfully used to determine the structural, dynamic, and electric properties of some molecular organized assembles. 9*10 Many reports have been focused on dielectric relaxation behavior of such systems in high frequency range 106-10'1Hz. 'I-'' A few researchers have primarily investigated that in low frequency range. 16*17In this paper, the ternary phase diagram of sodium dodecyl trioxyethylene sulfate ( SDES ) / n -butanol/water is obtained and phase behavior is discussed. DRS in low frequency range from 5 to I d Hz is applied to examine structure transition when one component content of the system varies, and it is in good agreement with the results obtained from phase diagram and conductivity measurements. Experimental MaterialsAnionic surfactant, sodium dodecyl trioxyethylene sulfate ( SDES 1, with the formula C H~( C H~)~I -( O C H Z C H Z )~O S O~N~, purchased from Henkel Ltd. (Germany), was recrystallized three times from ethanol and characterized by the melting point ( 148-150 T) and cmc ( 2 . 5 x 10-moVL , no minimum point ) . n -Butanol was of analytical reagent grade. All samples were prepared with deionized water. Samples for phase diagram were prepared by weighing the desired amount of SDES and n-C4H90H with a varying weight ratio from 0 : 10 to 10 : 0. Deionized water was added to the samples gradually while stirring at (30.0 * 0 . 1 ) "c . The isotropic uniphasic region ( L phase) of the phase behavior was determined by visual observation and conductivity measurements, and the liquid crystalline region was not studied in this paper. Conductivity measurementsConductivity measurements were performed with a conductometer ( Model DDS-1 1A , Shanghai Instrument Ltd., China) and a glass elec...

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A Phase Diagram of theN-Cetylpiridinium Chloride/1-BuOH/Water Ternary System

Cited by 17 publications

References 17 publications

Properties of the L and Lyotropic Phases in CTAB/Glycerol/Water and CTAB/Glyceraldehyde/Water Systems

Properties of the L and Lyotropic Phases in CTAB/Glycerol/Water and CTAB/Glyceraldehyde/Water Systems

Investigating the morphological transitions in an associative surfactant ternary system

Phase behavior and dielectric spectroscopy of the sodium dodecyl trioxyethylene sulfate/n‐butanol/water system

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