Results 241 to 250 of about 830,855 (309)

Dynamic surface tension of micellar solutions studied by the maximum bubble pressure method. 1. Experiment [PDF]

open access: closedColloid & 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.
Tz. Iliev, Ceco D. Dushkin
semanticscholar   +3 more sources

Adsorption kinetics at air/solution interface studied by maximum bubble pressure method

open access: closedColloid 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
semanticscholar   +4 more sources

Maximum Bubble Pressure Method: Universal Surface Age and Transport Mechanisms in Surfactant Solutions

open access: closedLangmuir, 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
semanticscholar   +5 more sources

Studies of concentrated surfactant solutions using the maximum bubble pressure method

open access: closedColloids 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
semanticscholar   +4 more sources

A reexamination of the measurement of dynamic surface tensions using the maximum bubble pressure method

open access: closedJournal 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
semanticscholar   +4 more sources

Development of Maximum Bubble Pressure Method for Surface Tension Measurement of High Viscosity Molten Silicate

open access: closedInternational 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
semanticscholar   +4 more sources

Dynamic surface tension of hydrocarbon and fluorocarbon surfactant solutions using the maximum bubble pressure method

open access: closedColloids 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
semanticscholar   +4 more sources

The measurement of dynamic surface tensions of solutions of slowly diffusing molecules by the maximum bubble pressure method

open access: closedJournal of Colloid Science, 1961
Abstract A method is presented for the use of the maximum bubble pressure method of measuring surface tension, to measure dynamic surface tensions of solutions of slowly diffusing soluble molecules. Data obtained using this method on aqueous solutions of decanoic acid and decyl alcohol are also presented.
Roy J. Kuffner
semanticscholar   +4 more sources

Measurement of Dynamic and Equilibrium Surface Tension of Surfactant Solutions by the Maximum Bubble Pressure Method

open access: closedHeat Transfer: Volume 1, 2003
Surfactant solution systems are encountered in many different applications, including as a method to enhance the nucleate boiling performance of water. Characterizing the attendant interfacial phenomena requires precise predictions of their surface tension relaxation behavior.
Manish Bahl   +2 more
semanticscholar   +4 more sources

Density of Liquid Manganese Measured Using the Maximum Bubble Pressure Method

Metallurgical and Materials Transactions B, 2021
Manganese 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
openaire   +3 more sources

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