Results 261 to 270 of about 539,711 (281)

Measuring Dynamic Surface Tensions

2000
The 'Handbook of Applied Surface and Colloid Chemistry' is a unique reference work that addresses the most important applications, phenomena and analytical techniques of wet surface chemistry. Including an enormous wealth of mainly practically orientated information it is written by an international team of renowned scientists and delivers with ...
RMiller, VBFainerman, AVMakievski, M Ferrari, GLoglio   +4 more
openaire   +2 more sources

Dynamic Surface Tensions of Nonionic Surfactant Solutions

Journal of Colloid and Interface Science, 1997
Abstract The air–solution equilibrium and dynamic surface tensions, γ eq and γ( t ), respectively, of different nonionic C i E j and glucamide surfactants have been studied as a function of concentration c , above and below their CMCs. DuNouy tensiometry was used to determine γ eq , CMCs, and the surface excesses Γ.
Eastoe, JG, Dalton, JS, Rogueda, PGA, Crooks, ER, Pitt, AR, Simister, EA   +5 more
openaire   +1 more source

Interface dynamics under the anisotropic surface tension

Physics Letters A, 1985
Abstract We derive the interface equation of motion with anisotropic surface tension and study the anisotropic effect on the dynamics of phase separation. The scaling form of the scattering function of the order parameter fluctuations is obtained in two and three dimensions.
Yoshihisa Enomoto, Kyozi Kawasaki, Takao Ohta, Shigetoshi Ohta   +3 more
openaire   +1 more source

Dynamic Surface Tension Effects on Oxygen Transfer

Journal of Environmental Engineering, 1991
Recent advances in estimating mass transfer coefficients are largely restricted to clean water conditions, and engineers must still rely upon empirical methods such as α factors to correct results for process conditions. This research focuses on quantifying the volumetric mass transfer coefficient, KLa, and the liquid film coefficient, KL, using the ...
Gail K. Masutani, Michael K. Stenstrom
openaire   +1 more source

Dynamic Surface Tensions of Fluorous Surfactant Solutions

Chinese Journal of Chemistry, 2005
AbstractDynamic surface properties of aqueous solutions of cationic fluorous surfactant CF3CF2CF2O(CF(CF3)CF2O)2CF(CF3)CONH(CH2)3N+(C2H5)2CH3I‐ (abbrev. FC‐4 ) were reported. The critical micelle concentration (cmc) (3.6×10‐5 mol/L) and equilibrium surface tensions γeq were measured by Krüss K12 tension apparatus.
Gao Yan‐An, Hou Wan‐Guo, Wang Zhong‐Ni, Li Gan‐Zuo, Han Bu‐Xing, Zhang Gao‐Yong, Lü Feng‐Feng   +6 more
openaire   +1 more source

Frother characterisation using dynamic surface tension measurements

International Journal of Mineral Processing, 2002
There is as yet no accepted method of predicting flotation frother performance in plant processes based on laboratory scale characterisation techniques. This paper investigates the use of dynamic surface tension, using the maximum bubble pressure method, as a means of evaluating frother performance. The method has been refined to facilitate measurement
Comley, B. A., Harris, P. J., Bradshaw, D. J., Harris, M. C.   +3 more
openaire   +2 more sources

Surfactants: Static and Dynamic Surface Tension

1997
Surfactants — an acronym for surface-active agents — are versatile and ubiquitous chemicals. They are found in industrial areas related to detergents (Hancock 1984; Thayer 1993), pharmaceuticals (Tadros 1984; Attwood and Florence 1983), cosmetics (Ainsworth 1993), paints (Nylen and Sunderland 1965), pesticides (Wada et al. 1983; Tann, Berger and Berger
openaire   +1 more source

Dynamic Surface Tension and Capillary Waves

1984
A definition is in order. Dynamic surface tension is the tension per unit length developed at a specified point in a surface and observed as a function of time. The surface is part of a nonequilibrium system.
openaire   +1 more source

Dynamic Surface Tension of Aqueous Surfactant Solutions

Journal of Colloid and Interface Science, 1994
Abstract A quantitative theory of the dynamic surface tension with a constant diffusion coefficient is developed for diffusion-controlled and diffusion-convective-controlled adsorption. The effect of the convective transfer is estimated in an analytical form for the short-time and large-time approximations.
openaire   +1 more source

Dynamic surface tension: Ripple damping

Journal of Colloid and Interface Science, 1969
J.Adin Mann, Jamil Ahmad
openaire   +1 more source