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Nanoemulsions and Nanomaterials through Vapor Condensation

3:30 pm - 4:30 pm, September 27, 2017

The Department of Biopharmaceutical Sciences presents:

“Nanoemulsions and Nanomaterials through Vapor Condensation”

Sushant Anand, Ph.D
Assistant Professor
Department of Mechanical and Industrial Engineering
University of Illinois at Chicago
Chicago, IL

September 27, 2017
3:30 PM – 4:30 PM

Room 134-3 COP/Rockford E223
833 S. Wood Street
Chicago, IL

Abstract: Nanoemulsions are widely used in applications such as cosmetics, drug delivery, membranes and materials synthesis because of their enhanced stability and long shelf-life. Existing emulsification methods rely either on the breakup of larger droplets or solvent exchange/inversion. In this talk, I will discuss a new approach for formulating colloids that is simple, fast, inexpensive, scalable and energy efficient. We show that nanoemulsions stabilized either by nanoparticles or surfactants can be directly obtained by condensing water vapor on a subcooled oil that spreads on water. Nanoemulsion formation by condensation is a bottoms-up approach wherein droplet nuclei first form at oil surface, are instantaneously submerged within the oil and then coalesce to larger sizes until their growth is curtailed by nanoparticle/surfactant adsorption. We show that nanoemulsions size in this process is governed by the competition between nanoparticle adsorption kinetics and droplet growth dynamics. Highly monodisperse and stable nanoemulsions (200 nm peak size, 13% polydispersity) can be formed by the synergistic action of nanoparticles and surfactants. Finally, I discuss how the vapor condensation process can be adapted for formulating wide variety of nanomaterials and complex emulsions for applications in biology, chemistry and materials science.

Event Details

Location: College of Pharmacy
Room: 134-3/Rockford E223
Address:
833 S. Wood Street
Chicago, IL

Sponsor: Department of Biopharmaceutical Sciences

Contact Name: Celina Tejada
Contact Email: Tejada@uic.edu
Contact Phone: 312-996-0888

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Date Posted: Fri, Sep 15
Date Updated: Fri, Sep 15

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