4.7 Article

How mechanical loading modulates non-ideal cosolute partitioning in hydrated polymeric membranes

Journal

JOURNAL OF MEMBRANE SCIENCE
Volume 685, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.memsci.2023.121943

Keywords

Cosolute partitioning; Polymeric membrane; Molecular theory; Stress-strain

Ask authors/readers for more resources

This study investigates the effect of mechanical forces on molecule transport through polymeric membranes in 1:1 salt solutions, considering the molecular information of the cosolutes. The research demonstrates the influence of strain-dependent cosolute partitioning on the interaction between the membrane and the bulk solution, emphasizing the role of dielectric repulsion in modulating the partitioning of multivalent cosolutes. By considering the mechanical stress and cosolute-membrane interaction, the analytical expression developed provides a molecular-level understanding of the transport behavior of cosolutes under mechanical stress.
This work examines the impact of mechanical forces on molecule (cosolute) transport through polymeric membranes in 1:1 salt solutions, considering the molecular information of the cosolutes. Our study highlights how strain-dependent cosolute partitioning between the membrane and the bulk solution is influenced by the interplay of size exclusion and specific binding interactions, with dielectric repulsion playing a dominant role in modulating multivalent cosolute partitioning. To gain a deeper understanding, we develop an analytical expression considering the mechanical stress and cosolute-membrane interaction, including the cosolute's chemical, electrical, and physical molecular information. We show that only elastic and osmotic contributions govern the stress-strain relationship of the membrane, regardless of its charge status. This approach provides a molecular-level representation of the chemical potential of cosolutes and their transport behavior under mechanical stress. The results establish a coupled theoretical framework for linking transport properties and mechanical deformation of polymeric membranes.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available