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A Theoretical And Experimental Study Of Surfactant Transport: From A Micellar Solution To A Clean Air/water Interface

Qing Song

ISBN 10: 3844389628 / ISBN 13: 9783844389623
Published by LAP LAMBERT Academic Publishing, 2011
Condition: Good Soft cover
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Bibliographic Details

Title: A Theoretical And Experimental Study Of ...

Publisher: LAP LAMBERT Academic Publishing

Publication Date: 2011

Binding: Paperback

Book Condition: Good

About this title

Synopsis:

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.

About the Author:

Dr. Qing Song, is an Assistant Professor at the Chemical Engineering Department at University of New Hampshire (UNH). Prior to joining in UNH, Dr. Qing Song is a postdoctoral associate at MIT and Harvard Medical School. Dr. Song obtained her PhD degree at Chemical Engineering from City University of New York.

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