Simulation of Solvent Evaporation Using DPD

COGNAC Dissipative Particle Dynamics (DPD) was used to represent two polymers, a solvent, and a gas phase. The evaporation phenomenon, in which the solvent component moves from a thin film composed of polymer and solvent to the gas phase region, was reproduced. The process of forming phase-separated structures transitioning from parallel to perpendicular orientation relative to the substrate during evaporation was confirmed, and the effects of interactions and wettability were evaluated.