Results 211 to 220 of about 88,199 (274)
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Langmuir, 2006
Here, based on the theoretical analysis of results for two ionic surfactants, sodium dodecyl sulfate (SDS) and dodecyl trimethylammonium bromide (DTAB), we develop a new approach for quantitative interpretation of data from the maximum bubble pressure method.
Alex Lips +4 more
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Here, based on the theoretical analysis of results for two ionic surfactants, sodium dodecyl sulfate (SDS) and dodecyl trimethylammonium bromide (DTAB), we develop a new approach for quantitative interpretation of data from the maximum bubble pressure method.
Alex Lips +4 more
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Dynamic surface tension determination with the maximum bubble pressure method
Journal of Colloid and Interface Science, 1971Abstract The surface tension of surfactant solutions can be observed conveniently as a function of time in the 1- to 100-sec range with some modifications of the normal maximum bubble pressure method. Dynamic surface tensions are compared with equilibrium values for dimethyldecylphosphine oxide, dimethyldodecylphosphine oxide, dimethyldodecylamine ...
R. L. Bendure
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Surface tension measurement of oil/refrigerant mixture by maximum bubble pressure method
International Journal of Refrigeration, 2017Abstract Lubrication oil used in refrigerant compressors forms oil mist in the compressor shell. Some of the oil mist is discharged into a refrigeration cycle with refrigerant and causes degradation of heat transfer in heat exchangers. Since the generation of the oil mist is related to the Weber number, it is necessary to measure the surface tension ...
Mitsuhiro Fukuta +3 more
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The maximum bubble pressure method of measuring surface tension, revisited
Colloids and Surfaces, 1990Abstract The maximum bubble pressure method can give precise and accurate values of the equilibrium surface tension as well as of the dynamic surface tension at clearly defined bubble ages as given by the bubble intervals. Each bubble samples a fresh, substantially clean surface and the sensitivity can be mdyn cm−1.
K. J. Mysels
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The measurement of dynamic surface tension by the maximum bubble pressure method
Colloid & Polymer Science, 1994The principle of maximum pressure in a bubble for measurements of dynamic surface tension is realized in a fully automatically operating apparatus. The set-up yields data in the time interval from 1 ms up to several seconds and can be temperature controlled from 5° to 80°C.
P. Joos +2 more
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International Journal of Thermophysics, 2017
A surface tension measurement method based on the maximum bubble pressure (MBP) method was developed in order to precisely determine the surface tension of molten silicates in this study. Specifically, the influence of viscosity on surface tension measurements was quantified, and the criteria for accurate measurement were investigated.
Osamu Takeda +4 more
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A surface tension measurement method based on the maximum bubble pressure (MBP) method was developed in order to precisely determine the surface tension of molten silicates in this study. Specifically, the influence of viscosity on surface tension measurements was quantified, and the criteria for accurate measurement were investigated.
Osamu Takeda +4 more
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Dynamic surface tension of micellar solutions studied by the maximum bubble pressure method [PDF]
Colloid & Polymer Science, 1994 A theoretical model for the dynamic surface tension of an air bubble expanding in surfactant solution is proposed. The model accounts for the effect of convection on the surfactant diffusion and the effect of expansion of the bubble surface during the adsorption of surfactant molecules.
Tz. H. Iliev, Ceco D. Dushkin
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Dynamic surface tension of micellar solutions studied by the maximum bubble pressure method. 1. Experiment [PDF]
Colloid & Polymer Science, 1992 The effect of the micelles on the dynamic surface tension of micellar surfactant solutions is studied experimentally by means of the maximum bubble pressure method. Different frequencies of bubbling ranging approximately between 1 and 30 s−1 are applied. The time dependence of the surface tension is calculated using a dead time correction.
Ceco D. Dushkin, Tz. H. Iliev
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Unusual Characteristics of the Maximum Bubble Pressure Method Using a Teflon Capillary
Journal of Colloid and Interface Science, 1994Abstract The maximum bubble pressure method has been used recently in a continuous-bubbling mode to measure the dynamic surface tension of surfactant solutions at varying bubble frequencies. A modification of this method, which utilizes a syringe pump supplying gas at controlled rates, has been developed to examine bubble growth by providing an ...
Douglas E. Hirt, Cheryl P. Hallowell
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Adsorption kinetics at air/solution interface studied by maximum bubble pressure method
Colloid and Polymer Science, 2004A general dynamic surface adsorption equation Γ(t) for maximum bubble pressure method was derived by solving Fick’s diffusion equation for the bubbles under different initial and boundary conditions. Different from the planar surface adsorption(Ward-Tordai equation), the derived dynamic surface adsorption Γ(t) for the short time consists of two terms ...
Ulf Messow, Junji Liu, Chuangye Wang
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