Dynamics of solvent release from polymer gels with small solvent-filled cavities is investigated starting from a thermodyna- mically consistent and enriched multiphysics stress-diffusion model. Indeed, the modeling also accounts for a new global volumetric constraint which makes the volume of the solvent in the cavity and the cavity volume equal at all times. This indu- ces a characteristic suction effect into the model through a negative pressure acting on the cavity walls. The problem is solved for gel-based spherical microcapsules and microtubules. The implementation of the mathematical model into a finite element code allows to quantitatively describe and compare the dynamics of solvent release from full spheres, hollow spheres, and tu- bules in terms of a few key quantities such as stress states and amount of released solvent under the same external conditions.
Curatolo, M., Nardinocchi, P., & Teresi, L. (2020). Modeling solvent dynamics in polymers with solvent-filled cavities. MECHANICS OF SOFT MATERIALS, 2(1).
|Titolo:||Modeling solvent dynamics in polymers with solvent-filled cavities|
|Data di pubblicazione:||2020|
|Citazione:||Curatolo, M., Nardinocchi, P., & Teresi, L. (2020). Modeling solvent dynamics in polymers with solvent-filled cavities. MECHANICS OF SOFT MATERIALS, 2(1).|
|Appare nelle tipologie:||1.1 Articolo in rivista|