(264i) Molecular Insights into the Electrowetting Behavior of Aqueous Ionic Liquid
AIChE Annual Meeting
Tuesday, November 9, 2021 - 9:52am to 10:08am
Molecular dynamics simulations were applied to study the wetting behavior of nanoscale aqueous hydrophilic and hydrophobic Imidazolium-based ionic liquid (IL) droplets on a solid graphite substrate subjected to the perpendicular electric field. Imminent transformation in the droplet configuration was observed at E = 0.08 V/Å both for hydrophobic ILs [EMIM][NTF2] and SPC/E water droplets. However, for hydrophilic, [EMIM][BF4], the droplet was completely stretched to be column-shaped under the electric field E = 0.09 V/Å for lower weight percentages of ILs and E > 0.1 V/Å at a higher weight percentage of ILs (> 30 wt%), because of the hydrophilic nature of [EMIM][BF4]. We explore the impact of electric-field through various parameters such as mass density distribution, contact angle, orientation, and hydrogen bonds.
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