Interfacial Studies of the Formation of Microemulsions of Water in Carbon Dioxide with Fluorinated Surfactants

Petros A. Psathas Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712

Edward A. Sander Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712

Won Ryoo Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712

Daniel Mitchell Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712

Richard J. Lagow Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712

Kwon Taek Lim Department of Imaging Science and Engineering, Pukyung National University, Pusan, Korea

Keith P. Johnston Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712

show all

ABSTRACT

Measurements of the interfacial tension, γ, for water-CO₂-perfiuoropoly ether (PFPE) ionic surfactant systems are utilized to understand the surfactant affinity for the various phases and adsorption at the interface. A marked decrease in γ with salinity is observed as salt screens electrostatic repulsion and induces microemulsion formation, as confirmed with dynamic light scattering. In several cases, the interfacial tension goes through an unusual maximum with salinity, which is explained in terms of competition between surfactant affinity for the various phases and microemulsion formation. Fundamental studies of interfacial properties provide important insight for designing surfactants and experimental conditions to achieve the desired properties of water/CO² microemulsions and emulsions.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Order Reprints Request Corporate Permissions

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

Request Academic Permissions

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.

Interfacial Studies of the Formation of Microemulsions of Water in Carbon Dioxide with Fluorinated Surfactants

Information for

Open access

Opportunities

Help and information

Interfacial Studies of the Formation of Microemulsions of Water in Carbon Dioxide with Fluorinated Surfactants

ABSTRACT

Reprints and Corporate Permissions

Academic Permissions

Related research

To cite this article:

Download citation

Information for

Open access

Opportunities

Help and information

Keep up to date

Your download is now in progress and you may close this window

Login or register to access this feature