[O3-9]
Solvent Vapor-Induced Rearrangement of Adsorbed Polymer Chains and its Effect on Interfacial Properties
발표자배석영 (서울대학교)
연구책임자김소연 (서울대학교)
Abstract
The polymer adsorption layer is a thin layer of polymer chains directly adsorbed onto a substrate. These layers are known to govern the physical properties of polymer materials involving polymer–solid interfaces. Although polymer adsorption has been widely studied, the effect of solvent interactions on directly adsorbed chains has yet to be thoroughly explored.
In this study, we investigate the rearrangement of poly(2-vinylpyridine) (P2VP) chains adsorbed on solid substrates by exposing them to solvent vapor. We found that specific solvent vapors induce chain rearrangement, altering interactions between P2VP chains and the substrate. Notably, these structural changes result in a transition in the surface property of the adsorption layer, from hydrophilic to hydrophobic. Furthermore, we examine how these rearranged chains influence the dynamics of non-adsorbed chains in an additional polymer layer by analyzing the glass transition temperature of the entire polymer film.