Adsorption of alkanes from the vapour phase on water drops measured by drop profile analysis tensiometry

Soft Matter ◽  
2010 ◽  
Vol 6 (19) ◽  
pp. 4710 ◽  
Author(s):  
A. Javadi ◽  
N. Moradi ◽  
H. Möhwald ◽  
R. Miller
Keyword(s):  
Profile Analysis ◽  
Vapour Phase ◽  
Water Drops ◽  
Drop Profile Analysis Tensiometry

Drop profile analysis tensiometry under highly dynamic conditions

2012 ◽  
Vol 413 ◽  
pp. 292-297 ◽  
Author(s):  
M. Karbaschi ◽  
D. Bastani ◽  
A. Javadi ◽  
V.I. Kovalchuk ◽  
N.M. Kovalchuk ◽  
...  
Keyword(s):  
Profile Analysis ◽  
Dynamic Conditions ◽  
Drop Profile Analysis Tensiometry

scholarly journals Direct Determination of the Distribution Coefficient of Tridecyl Dimethyl Phosphine Oxide between Water and Hexane

2018 ◽  
Vol 2 (3) ◽  
pp. 28 ◽  
Author(s):  
Valentin Fainerman ◽  
Altynay Sharipova ◽  
Saule Aidarova ◽  
Volodymyr Kovalchuk ◽  
Eugene Aksenenko ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Distribution Coefficient ◽  
Phosphine Oxide ◽  
Profile Analysis ◽  
Water Drop ◽  
Direct Determination ◽  
Interfacial Tensions ◽  
Drop Profile Analysis Tensiometry ◽  
Hexane Solution

Drop profile analysis tensiometry is applied to determine the distribution coefficient of a nonionic surfactant for a water/hexane system. The basic idea is to measure the interfacial tension isotherm in two configurations: a hexane drop immersed in the surfactant aqueous solutions at different bulk concentrations, and a water drop immersed into a hexane solution of the same surfactant. Both types of experiments lead to an isotherm for the equilibrium interfacial tensions with the same slope but with a concentration shift between them. This shift refers exactly to the value of the distribution coefficient.

scholarly journals Surface Tension and Adsorption Studies by Drop Profile Analysis Tensiometry

2017 ◽  
Vol 20 (6) ◽  
pp. 1225-1241 ◽  
Author(s):  
T. Kairaliyeva ◽  
E. V. Aksenenko ◽  
N. Mucic ◽  
A. V. Makievski ◽  
V. B. Fainerman ◽  
...  
Keyword(s):  
Surface Tension ◽  
Profile Analysis ◽  
Adsorption Studies ◽  
Drop Profile Analysis Tensiometry

On the applicability of Drop Profile Analysis Tensiometry at high flow rates using an interface tracking method

2014 ◽  
Vol 441 ◽  
pp. 837-845 ◽  
Author(s):  
Kathrin Dieter-Kissling ◽  
Mohsen Karbaschi ◽  
Holger Marschall ◽  
Aliyar Javadi ◽  
Reinhard Miller ◽  
...  
Keyword(s):  
Profile Analysis ◽  
High Flow ◽  
Interface Tracking ◽  
Flow Rates ◽  
Tracking Method ◽  
Drop Profile Analysis Tensiometry

scholarly journals Surface Tension Measurements with the Drop Profile Analysis Tensiometry—Consideration of the Surfactant Mass Balance in a Single Drop

2017 ◽  
Vol 1 (1) ◽  
pp. 1 ◽  
Author(s):  
Talmira Kairaliyeva ◽  
Nenad Mucic ◽  
Ljiljana Spasojevic ◽  
Sandra Bucko ◽  
Jaroslav Katona ◽  
...  
Keyword(s):  
Surface Tension ◽  
Mass Balance ◽  
Profile Analysis ◽  
Single Drop ◽  
Drop Profile Analysis Tensiometry

Can optical fiber compete with profile analysis tensiometry in critical micelle concentration measurement?

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Farzaneh Hajirasouliha ◽  
Hua Yang ◽  
Qiang Wu ◽  
Dominika Zabiegaj
Keyword(s):  
Critical Micelle Concentration ◽  
Optical Fiber ◽  
Cetyltrimethylammonium Bromide ◽  
Profile Analysis ◽  
Sodium Dodecyl ◽  
Fiber Surface ◽  
Ionic Surfactants ◽  
Spectrum Width ◽  
Drop Profile Analysis Tensiometry ◽  
Optical Fiber Measurement

Abstract Critical micelle concentration (CMC) is one of the important nominal characteristics of the surfactants which can be measured using various methods. In this study, to detect the CMC of two ionic surfactants, cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS), two methods were utilized: (a) optical fiber and (b) drop profile analysis tensiometry (PAT) techniques. The spectrum width center and surface tension of the solutions at different concentrations of the surfactant were measured. The preliminary outcomes showed a compliance between optical fiber method and PAT technique. However, there were differences in the behavior of two surfactants in optical fiber measurement. In this method, when the solid surface of fiber is put in the system, the interactions between surfactant molecules and the fiber surface must be carefully considered.

scholarly journals Coalescence of sessile drops

2002 ◽  
Vol 453 ◽  
pp. 427-438 ◽  
Author(s):  
C. ANDRIEU ◽  
D. A. BEYSENS ◽  
V. S. NIKOLAYEV ◽  
Y. POMEAU
Keyword(s):  
Relaxation Time ◽  
Vapour Phase ◽  
Theoretical Description ◽  
Characteristic Relaxation Time ◽  
Late Time ◽  
Spherical Cap ◽  
Water Drops ◽  
Exponential Relaxation ◽  
Kinetics Of ◽  
Latent Heat Of Vaporization

We present an experimental and theoretical description of the kinetics of coalescence of two water drops on a plane solid surface. The case of partial wetting is considered. The drops are in an atmosphere of nitrogen saturated with water where they grow by condensation and eventually touch each other and coalesce. A new convex composite drop is rapidly formed that then exponentially and slowly relaxes to an equilibrium hemispherical cap. The characteristic relaxation time is proportional to the drop radius R* at final equilibrium. This relaxation time appears to be nearly 107 times larger than the bulk capillary relaxation time tb = R*η/σ, where σ is the gas–liquid surface tension and η is the liquid shear viscosity.In order to explain this extremely large relaxation time, we consider a model that involves an Arrhenius kinetic factor resulting from a liquid–vapour phase change in the vicinity of the contact line. The model results in a large relaxation time of order tb exp(L/[Rscr ]T) where L is the molar latent heat of vaporization, [Rscr ] is the gas constant and T is the temperature. We model the late time relaxation for a near spherical cap and find an exponential relaxation whose typical time scale agrees reasonably well with the experiment.

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