Thermodynamic consideration of the pressure dependence of interfacial tension

Motomura, Kinsi; Iyota, Hidemi; Aratono, Makoto; Yamanaka, Masanori; Matuura, Ryôhei

doi:10.1016/0021-9797(83)90404-6

Cited by 63 publications

(30 citation statements)

References 17 publications

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“…It is important to mention that of all the factors studied (not including concentration), it was the temperature that showed the greatest influence on the IFT, and it is advisable to combine both temperature and concentration effects to achieve the desired variation on the IFT, according to need. Previous studies [6,[13][14][15] have found that there is a linear dependence between the pressure and IFT in fluid-fluid interfaces; however, it was not possible to observe this behavior in the studied range of values. Therefore, and considering the ranges of pressures studied by other authors, we conclude that in liquid-liquid systems this dependence can only be observed for very high pressures.…”

Section: Discussioncontrasting

confidence: 71%

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Influence of Drop Growth Rate and Size on the Interfacial Tension of Triton X-100 Solutions as a Function of Pressure and Temperature

et al. 2010

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The interfacial tension (IFT) between decane and aqueous solutions of Triton X-100 was determined by the pendant-drop technique, and the effects of the temperature, pressure, surfactant concentration, droplet growth rate, and size were studied. Three aqueous solutions of surfactant were used (0.48×10 −4 mol · L −1 , 0.96×10 −4 mol·L −1 , 1.43×10 −4 mol·L −1 ), and the experiments were performed at (2, 3, and 4) MPa and at (30, 40, and 50) • C. As expected, the alkane drop changed its shape, and the IFT of the system decreased as the surfactant adsorbed onto the interface, until the drop finally separates from the capillary, in a maximum time of 2120 s. According to the results, the influence of temperature on the IFT is inversely proportional to the surfactant concentration, because when the concentration increases, the temperature has little effect on it. It was also noticed that the effect of pressure on the IFT at lower surfactant concentrations is less significant than at higher concentrations. When the temperature decreases, the pressure reduces its effect on the IFT, as occurs with systems at 30 • C. The droplet growth rate does not significantly affect the IFT value, while its size does; therefore, when transient studies are carried out, it is required to control the drop size.

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Section: Discussioncontrasting

confidence: 71%

“…Previous studies of the IFT in decane/water systems have shown that this property increases as the pressure increases [7,13]. In this study with aqueous solutions of TX-100, this behavior can be validated at every temperature for the 4.78 × 10 −5 mol · L −1 solutions (Fig.…”

Section: Surfactant Concentration Effectmentioning

confidence: 53%

Influence of Drop Growth Rate and Size on the Interfacial Tension of Triton X-100 Solutions as a Function of Pressure and Temperature

et al. 2010

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“…5. However, comparing As value of the water-hexyl bromide system with that of the waterhexane system reported in our previous study [24] tells us that the effect of the orientation is not large enough to make the zls value negative when hydrocarbon chain is relatively short. Noting that the 5.…”

Section: Resultsmentioning

confidence: 63%

Thermodynamic consideration on the interface formation of water and ethylene glycol isobutyl ether mixture

Aratono

Nakayama

Ikeda

et al. 1990

Colloid & Polymer Sci

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The interfacial tension of the binary two-phase mixture of water and ethylene glycol isobutyl ether (EIB) was measured as a function of temperature in the vicinity of the lower critical solution temperature Tc under atmospheric pressure. The interfacial tension decreased with decreasing temperature and approached zero at To The thermodynamic quantities of interface formation were evaluated by applying equations developed previously to the interfacial tension vs temperature curves. The results were compared with those of the water and diethylene glycol diethyl ether system examined previously, and the effect of the molecular structure of the ether molecule on its interfacial behavior was discussed. It was suggested that the hydration of the ethylene oxide groups of ether molecules was an important factor in the interface formation as well as in the mixing of component molecules of the systems investigated here.

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“…The effect of pressure on multiphase microemulsion systems has been given little attention and there is few data on low interfacial tension as a function of pressure (9). For two-component systems like oil/water the 1FT is very little dependent upon pressure (10)(11)(12). However, for systems close to critical points where the 1FT vanish due to miscibility, the 1FT must have a very strong dependence on pressure.…”

Section: Introductionmentioning

confidence: 98%