Solvent Diffusion Modeling in Silicone

The diffusion of solvents into a polymer matrix is critical in various applications, such as medicine and electronic coatings. Previously, one-dimensional modeling of solvent diffusion in a highly cross-linked epoxy resin was successfully established by using the PC-SAFT approach. This study extends...

Full description

Saved in:
Bibliographic Details
Published in:Journal of chemical and engineering data Vol. 69; no. 2; pp. 472 - 481
Main Authors: Wagner, Stefan, Nagl, Roland, Weissensteiner, Alexander, Strunčnik, Julija, Schönbacher, Lara, Gschwandl, Mario, Fischlschweiger, Michael, Zeiner, Tim
Format: Journal Article
Language:English
Published: American Chemical Society 08-02-2024
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The diffusion of solvents into a polymer matrix is critical in various applications, such as medicine and electronic coatings. Previously, one-dimensional modeling of solvent diffusion in a highly cross-linked epoxy resin was successfully established by using the PC-SAFT approach. This study extends the approach to consider all spatial dimensions for silicone to validate the applicability of the model to different polymers. As a result, it is now possible to take all geometric aspects into account when modeling solvent uptake using an equation of state. The extended model shows improved correlations between experimental data and swelling curves compared to those of the established one-dimensional model. In addition, the Maxwell-Stefan diffusion coefficient was found to be highly susceptible to overestimation when only one dimension is considered. The temperature dependence of the diffusion coefficient was taken into account, and for the first time, the drying of a polymer sample was modeled from the swelling results using the developed model.
ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.3c00406