Effect of a solvent on self-organization in nanofilms: Modeling by the dissipative particle dynamics method |
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| Authors: | I V Neratova A S Pavlov P G Khalatur |
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| Institution: | 1.Tver State University,Tver,Russia;2.University of Ulm,Ulm,Germany;3.Nesmeyanov Institute of Organoelement Compounds,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | Mesoscopic simulation of processes of drying and swelling of thin copolymer films on a solid substrate is performed. Structural
rearrangements in films of symmetric and asymmetric diblock copolymers are studied by the dissipative particle dynamics method
in the presence of both nonselective and selective solvents. The plasticizing effect of a solvent is favorable for formation
of lamellar and hexagonal mesophases. Owing to evaporation of the solvent from a film or its absorption from the external
volume, flows along the normal to the film surface arise. These flows exert an orienting effect on the microdomain structure. |
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