Self-Assembly of Symmetric Copolymers in Slits with Inert and Attractive Walls

0581418 - ÚCHP 2024 RIV CH eng J - Journal Article
Blovský, T. - Šindelka, Karel - Limpouchová, Z. - Procházka, K.
Self-Assembly of Symmetric Copolymers in Slits with Inert and Attractive Walls.
Polymers. Roč. 15, č. 22 (2023), č. článku 4458. E-ISSN 2073-4360
Institutional support: RVO:67985858
Keywords : monte-carlo * chain architecture * dissipative particle dynamics * selective-solvent
OECD category: Physical chemistry
Impact factor: 5, year: 2022
Method of publishing: Open access
https://www.mdpi.com/2073-4360/15/22/4458

Although the behavior of the confined semi-dilute solutions of self-assembling copolymers represents an important topic of basic and applied research, it has eluded the interest of scientists. Extensive series of dissipative particle dynamics simulations have been performed on semi-dilute solutions of A5B5 chains in a selective solvent for A in slits using a DL-MESO simulation package. Simulations of corresponding bulk systems were performed for comparison. This study shows that the associates in the semi-dilute bulk solutions are partly structurally organized. Mild steric constraints in slits with non-attractive walls hardly affect the size of the associates, but they promote their structural arrangement in layers parallel to the slit walls. Attractive walls noticeably affect the association process. In slits with mildly attractive walls, the adsorption competes with the association process. At elevated concentrations, the associates start to form in wide slits when the walls are sparsely covered by separated associates, and the association process prevents the full coverage of the surface. In slits with strongly attractive walls, adsorption is the dominant behavior. The associates form in wide slits at elevated concentrations only after the walls are completely and continuously covered by the adsorbed chains.
Permanent Link: https://hdl.handle.net/11104/0349702