GEOC 72 |
| Robert K Thomas, Physical and Theoretical Chemistry, Physical and Theoretical Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom |
| Neutron scattering may be used to explore single flat interfaces between liquids and solids in two ways, using reflection or diffraction. The reflection method can be used to explore a wide range of systems at the interface between silica, quartz or sapphire and aqueous solutions. These include adsorbed surfactants, amphiphiles, polymers, proteins and other biological systems. The type of interface can be further extended by coating the surface with monomolecular films and then studying the new interface with water (or other solvents). Examples of all the systems above will be described. Diffraction can sometimes usefully be used to study interfaces but the surface area needs to be greatly increased over that required for reflection. Examples of the use of diffraction for studying adsorption of surfactant/organic/aqueous mixtures at clay surfaces will be discussed. |
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Interfacial Phenomena: Linking Atomistic and Macroscopic Properties
8:00 AM-11:40 AM, Tuesday, March 30, 2004 Marriott -- Marquis NW, Oral
Division of Geochemistry |