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Related Experiment Video

Updated: Jan 15, 2026

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Published on: January 25, 2018

Deep eutectic solvent assisted oil - water interfacial behavior on polystyrene surfaces: a computational study.

Kalampyr Bexeitova¹, Aida Ardakkyzy¹, Raushan Soltan¹

¹Laboratory of Engineering Profile, Satbayev University, Satbayev St. 22a, Almaty, 050013, Kazakhstan.

Scientific Reports

|October 15, 2025

Summary

Deep Eutectic Solvents (DES) improve oil-water separation on polystyrene surfaces by enhancing compatibility. DES additives promote oil adhesion to the polymer, overcoming challenges in hydrophobic separation systems.

Keywords:

Deep eutectic solvents Membrane Molecular dynamics Octane Polystyrene Separation Water

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Published on: July 27, 2022

Area of Science:

Materials Science
Chemical Engineering
Computational Chemistry

Background:

Hydrophobic polymer surfaces like polystyrene (PS) present challenges for oil-water separation due to poor interfacial control and low wettability.
Existing methods struggle with efficient separation, necessitating novel approaches for improved performance.

Purpose of the Study:

To computationally investigate the use of Deep Eutectic Solvents (DES) as environmentally friendly additives for modifying interfacial behavior in oil-water-polymer systems.
To enhance the compatibility between oil, water, and hydrophobic polymer surfaces for improved separation.

Main Methods:

Classical all-atom molecular dynamics (MD) simulations were employed to analyze molecular interactions at the oil-water-DES-PS interface.
Molecular structural analysis and Radial Distribution Function (RDF) analysis were used to quantify interfacial behavior and interactions.

Main Results:

Deep Eutectic Solvents (DES) were found to preferentially adsorb onto the polystyrene (PS) surface, displacing water.
DES significantly enhanced the contact between octane (oil) and PS, reducing direct PS-water interactions.
Interaction energy analysis confirmed that DES strengthens van der Waals attraction between PS and octane, driven by choline-PS interactions.

Conclusions:

Deep Eutectic Solvents (DES) show significant potential for improving oil-water separation on hydrophobic polymer surfaces.
These findings provide molecular-level insights for designing advanced DES-assisted membrane systems for efficient and sustainable separation.