Chemical Engineering 2020 Seminar Series

Date/Time

02/24/2020
9:35 am-10:35 am
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Location

NEB 100
1064 CENTER DR
Gainesville, Florida 32611

Details

“Understanding Nanoscale and Molecular Processes in
Emulsions Systems with Neutron and X-ray Scattering”

Lilo D. Pozzo, Ph.D.
Weyerhaeuser Professor of Chemical Engineering, University of Washington

Emulsions are dynamic and complex systems with several physical mechanisms possibly
leading to the formation, destruction and transformation of their interfacial and bulk
structures. Simultaneously, emulsions are increasingly being used in consumer products
(creams, cosmetics), for the synthesis of advanced materials (latexes, nanoparticles), in
medicine (disease diagnosis and treatment) and in energy technologies (oil extraction and
processing). This talk will summarize our past work using neutron and x-ray scattering to
uncover fundamental colloidal and transport principles that are essential to understand in
order to design new emulsion technologies for specific uses. I will briefly introduce the
techniques of small angle neutron and x-ray scattering (SANS, SAXS) followed by the
discussion of several examples showcasing how these have been applied to understand the
formation of Pickering emulsions, the synthesis of ultrasound medical contrast agents,
sonochemical production of semiconductor nanoparticles (quantum dots) and finally the
analysis of mass transport processes ocurring within emulsion systems using contrast
variation small angle neutron scattering.

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Chemical Engineering