Abstract
The surface tension of aqueous solutions of dodecyltrimethylammonium bromide (DTAB) and octyl-β-d-glucopyranoside (OG) mixture was measured as a function of the total molality of surfactants and the relative proportion of OG under atmospheric pressure at 298.15 K by drop volume technique. The results of surface tension measurements were analyzed by originally developed thermodynamic equations then phase diagrams of adsorption and micelle formation were constructed. From the analysis of surface tension data, it was suggested that the addition of relatively small amount of DTAB molecules helps the denser monolayer formation compared with the ideal mixing. Furthermore, it was also suggested that the phase diagram of micelle formation has a negative azeotropic point and that the interaction between different components is stronger in the mixed micelle than in the adsorbed film from the view point of the excess Gibbs energy. From these results, it is concluded that the hydrogen bond formation between OG molecules is the main contribution to determine the physical properties in the adsorbed film whereas the ion-dipole interaction between head groups of different components becomes main cause of attractive interaction in the micelle.
| Original language | English |
|---|---|
| Pages (from-to) | 183-188 |
| Number of pages | 6 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 315 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Feb 15 2008 |
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All Science Journal Classification (ASJC) codes
- Colloid and Surface Chemistry
Cite this
Surface adsorption and aggregate formation of aqueous binary mixture of cationic surfactant and sugar surfactant. / Matsubara, Hiroki; Obata, H.; Matsuda, T.; Takiue, Takanori; Aratono, Makoto.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 315, No. 1-3, 15.02.2008, p. 183-188.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Surface adsorption and aggregate formation of aqueous binary mixture of cationic surfactant and sugar surfactant
AU - Matsubara, Hiroki
AU - Obata, H.
AU - Matsuda, T.
AU - Takiue, Takanori
AU - Aratono, Makoto
PY - 2008/2/15
Y1 - 2008/2/15
N2 - The surface tension of aqueous solutions of dodecyltrimethylammonium bromide (DTAB) and octyl-β-d-glucopyranoside (OG) mixture was measured as a function of the total molality of surfactants and the relative proportion of OG under atmospheric pressure at 298.15 K by drop volume technique. The results of surface tension measurements were analyzed by originally developed thermodynamic equations then phase diagrams of adsorption and micelle formation were constructed. From the analysis of surface tension data, it was suggested that the addition of relatively small amount of DTAB molecules helps the denser monolayer formation compared with the ideal mixing. Furthermore, it was also suggested that the phase diagram of micelle formation has a negative azeotropic point and that the interaction between different components is stronger in the mixed micelle than in the adsorbed film from the view point of the excess Gibbs energy. From these results, it is concluded that the hydrogen bond formation between OG molecules is the main contribution to determine the physical properties in the adsorbed film whereas the ion-dipole interaction between head groups of different components becomes main cause of attractive interaction in the micelle.
AB - The surface tension of aqueous solutions of dodecyltrimethylammonium bromide (DTAB) and octyl-β-d-glucopyranoside (OG) mixture was measured as a function of the total molality of surfactants and the relative proportion of OG under atmospheric pressure at 298.15 K by drop volume technique. The results of surface tension measurements were analyzed by originally developed thermodynamic equations then phase diagrams of adsorption and micelle formation were constructed. From the analysis of surface tension data, it was suggested that the addition of relatively small amount of DTAB molecules helps the denser monolayer formation compared with the ideal mixing. Furthermore, it was also suggested that the phase diagram of micelle formation has a negative azeotropic point and that the interaction between different components is stronger in the mixed micelle than in the adsorbed film from the view point of the excess Gibbs energy. From these results, it is concluded that the hydrogen bond formation between OG molecules is the main contribution to determine the physical properties in the adsorbed film whereas the ion-dipole interaction between head groups of different components becomes main cause of attractive interaction in the micelle.
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UR - http://www.scopus.com/inward/citedby.url?scp=37349042910&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2007.07.034
DO - 10.1016/j.colsurfa.2007.07.034
M3 - Article
AN - SCOPUS:37349042910
VL - 315
SP - 183
EP - 188
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
IS - 1-3
ER -