Bulletin of the American Physical Society
68th Annual Meeting of the APS Division of Fluid Dynamics
Volume 60, Number 21
Sunday–Tuesday, November 22–24, 2015; Boston, Massachusetts
Session KP2: Student Poster Session
Monday, November 23, 2015
Room: Exhibit Hall D (Student Poster Display Area)
Abstract ID: BAPS.2015.DFD.KP2.23
Abstract: KP2.00023 : Polymer and protein interfacial competition in a shell production process*
Preview Abstract Abstract
(University of California Davis)
We are exploring oil-in-aqueous polymer compound droplet formulations to UV polymerize into shells while in a strong AC electric field (kV/cm, 20 MHz). The electric field drives the drops to adopt a concentric configuration so that a ``perfect'' spherical shell can be polymerized with a uniform wall thickness. In our previous study of oil-in-water droplet centering, we determined that droplet stretching in the electric field was a problem, which we overcame by using protein additives to strengthen the oil/water interface. However, adding polymer to the shell fluid has been shown to weaken the droplet interface and further complicates T junction droplet generation. In this work, we study the adsorption competition between bovine serum albumin and polyethylene glycol diacrylate with the pendant drop method to generate a polymer/protein shell formulation that will resist stretching in the centering electric field. Furthermore, we explore droplet generation of polymer/protein shell formulations in a double T junction and stretching in an electric field.
*Work supported by General Atomics IR\&D funds.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2015.DFD.KP2.23
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