Results 251 to 260 of about 233,669 (326)
Dynamic surface tension determination with the maximum bubble pressure method
Journal of Colloid and Interface Science, 1971 Abstract 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 ...
Raymond L Bendure
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Adsorption kinetics at air/solution interface studied by maximum bubble pressure method
Colloid and Polymer Science, 2004 A 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 ...
Junji Liu, Wang Chuang-ye, Ulf Messow
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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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Dynamic surface tension of micellar solutions studied by the maximum bubble pressure method
Colloid and Polymer Science, 1995 A theoretical model for the dynamic surface tension of an air bubble expanding in micellar surfactant solution is proposed. The model accounts for the effect of expansion of the bubble surface during the adsorption of surfactant molecules (monomers) and the effect of disintegration of polydisperse micelles on the surfactant diffusion.
Ceco D. Dushkin +2 more
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Studies of concentrated surfactant solutions using the maximum bubble pressure method
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2000 Abstract An analysis of the adsorption process during the deadtime period in maximum bubble pressure experiments is performed. The adsorption dynamics is calculated for the actual surface area increase of a bubble in a surfactant solution, which depends on characteristic system parameters such as the length and diameter of the capillary and the ...
N. A. Mishchuk +4 more
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Journal of Colloid and Interface Science, 1989 Abstract The maximum bubble pressure method for measuring dynamic surface tension is reexamined, using high speed cinematography, particularly with respect to the process of bubble formation and the determination of the true surface age. A method for direct measurement of the time of bubble growth is suggested which readily permits routine ...
Peter R. Garrett, David Ward
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Unusual Characteristics of the Maximum Bubble Pressure Method Using a Teflon Capillary
Journal of Colloid and Interface Science, 1994 Abstract 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 ...
Cheryl P. Hallowell, Douglas E. Hirt
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Density of Liquid Manganese Measured Using the Maximum Bubble Pressure Method
Metallurgical and Materials Transactions B, 2021Manganese is an important metal for steelmaking. Data on the density of the metal are scarce and show considerable scatter. Present work reports the density of the liquid manganese in the range of 1535 K to 1836 K estimated for the first time with the use of the maximum bubble pressure technique.
Iurii Korobeinikov +3 more
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Colloids and Surfaces, 1990 Abstract Industrial processes frequently use surfactants to lower liquid surface tension and promote wetting. In many instances, it is incorrect to apply the equilibrium (static) surface tension to predict the behavior of these processes because they operate under time-dependent (dynamic) conditions.
Douglas E. Hirt +3 more
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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.
Nikolay C, Christov +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.
Nikolay C, Christov +4 more
openaire +3 more sources