Mixing Linear Polymers with Rings and Catenanes: Bulk and Interfacial Behavior

Autor(en)

Roman Staňo, Christos N. Likos, Sergei A. Egorov

Abstrakt

We derive and parameterize effective interaction potentials between a multitude of different types of ring polymers and linear chains, varying the bending rigidity and solvent quality for the former species. We further develop and apply a density functional treatment for mixtures of both disconnected (chain-ring) and connected (chain-polycatenane) mixtures of the same, drawing coexistence binodals and exploring the ensuing response functions as well as the interface and wetting behavior of the mixtures. We show that worsening of the solvent quality for the rings brings about a stronger propensity for macroscopic phase separation in the linear-polycatenane mixtures, which is predominantly of the demixing type between phases of similar overall particle density. We formulate a simple criterion based on the effective interactions, allowing us to determine whether any specific linear-ring mixture will undergo a demixing phase separation.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie, Forschungsplattform Internationales Erwin Schrödinger Institut für Mathematik und Physik

Externe Organisation(en)

University of Virginia

Journal

Macromolecules

Band

56

Seiten

8168-8182

Anzahl der Seiten

15

ISSN

0024-9297

DOI

https://doi.org/10.1021/acs.macromol.3c01267

Publikationsdatum

10-2023

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik

ASJC Scopus Sachgebiete

Organic Chemistry, Polymers and Plastics, Inorganic Chemistry, Materials Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/dc3d2fff-f348-4008-a6da-ccc7188fda37