Author: Qing SongPublisher:
ISBN:
Category :
Languages : en
Pages : 236
Book Description
A Theoretical and Experimental Study of Surfactant Transport from a Micellar Solution to a Clean Air/water Interface
Author: Qing SongA Theoretical and Experimental Study of Surfactant Transport
Author: Qing SongPublisher: LAP Lambert Academic Publishing
ISBN: 9783844389623
Category :
Languages : en
Pages : 136
Book Description
This dissertation studies the transport dynamics of a water soluble nonionic surfactant C14E6 at the air/water interface at concentration below the critical micelle concentration (CMC) and above the CMC. A method which involves using the pendant bubble as a monolayer film balance is used to directly measure the surface tension as a function of surface concentration. The equilibrium parameters could be uniquely determined by fitting the directly measured equation of state and adsorption isotherm. Instead remarkably different equilibrium parameters for the same surfactant system fit experimental data equally well in the traditional treatment. The kinetic constants are obtained by numerically solving the transport equations for surfactant transport from aqueous solution at concentration below the critical micelles concentration. Theoretically, a model was developed to describe the surfactant transport from micellar solution for the case in which the kinetic rate of breakdown of micelles into monomers is much faster than the rates of bulk diffusion of monomers and micelles.
Using Surfactants to Remobilize the Interface of a Rising Bubble
Author: Ashish TanejaTheory and Experiment on the Transport of Surfactant from Micellar Solutions to a Clean Air/water Interface
Author: Fenfen HuangUltrafiltration of a Nonionic Surfactant
Author: Henric ByhlinPublisher:
ISBN: 9789163116889
Category :
Languages : en
Pages : 102
Book Description
NBS Special Publication
Author: Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 520
Book Description
Effect of Surfactant Transport on the Mobility of Bubbles in Liquids
Author: Ravichandra PalaparthiPublisher:
ISBN:
Category : Bubbles
Languages : en
Pages : 368
Book Description
Theoretical and Experimental Studies of Micellization and Phase Behavior of Aqueous Solutions of Single and Mixed Surfactants
Author: Sudhakar PuvvadaScientific and Technical Aerospace Reports
Author: Theoretical and Experimental Investigation of the Equilibrium and Dynamic Interfacial Behavior of Mixed Surfactant Solutions
Author: Michael Patrick MulqueenPublisher:
ISBN:
Category :
Languages : en
Pages : 339
Book Description
(Cont.) (i) repulsive, steric interactions, which were modeled using a hard-disk treatment, and (ii) attractive, van der Waals interactions, which were modeled using a virial expansion, truncated to second order in surfactant surface concentration. Since both the hard-disk size and the second-order virial coefficients characterizing these interactions can be deduced from the known molecular structures of the surfactants, this surface equation of state contains no experimentally determined parameters. This nonionic surface equation of state was subsequently modified to incorporate electrostatic effects associated with charged surfactants. For mixtures that contain only a single ionic surfactant species, the electrostatic contribution to the surface equation of state was computed using a Gouy-Chapman based approach, which also included a Stern layer of counterion exclusion. This electrostatic description assumes that all of the electrostatic charge on the adsorbed surfactant molecules is located on a single two-dimensional charge layer. The Gouy-Chapman model was then extended to mixtures that contain multiple ionic surfactants, or surfactants that contain multiple charged groups (such as zwitterionic surfactants) by treating the case of multiple, two-dimensional charge layers at the interface. This extended theoretical framework is capable of treating any number of surfactant components containing any number of charged groups ...