Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: S1.00081 : Silica-Based Janus Nanoparticles at the Water-Decane Interface
Author:
It is well known that solid particles adsorb at water-oil
interfaces to
reduce the contact area between the two immiscible phases. Stable
emulsions
are obtained when the particles strongly adsorb at the
interfaces. We report
herein all atom molecular dynamics simulation results for
silica-based
nanoparticles functionalized with hydrophobic moieties at the
decane-water
interface. The simulation results are quantified in terms of
contact angle
at the water-nanoparticle-decane interface, mobility of the
nanoparticles,
association of multiple nanoparticles at the interface, and
free-energy
landscapes that dictate the nanoparticle adsorption at the
interface. The
results are discussed based on the chemical features of the
nanoparticle
surface. Comparison with experimental data, including but not
limited to TEM
and cryo-TEM images of water-oil emulsions, are provided.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.S1.81
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