%0 Journal Article %T Modeling phase inversion using Cahn-Hilliard equations - Influence of the mobility on the pattern formation dynamics %+ Institut Européen des membranes (IEM) %+ Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire (LIONS) %A Manzanarez, H. %A Mericq, J.P. %A Guenoun, P. %A Chikina, J. %A Bouyer, D, P %< avec comité de lecture %@ 0009-2509 %J Chemical Engineering Science %I Elsevier %V 173 %P 411 - 427 %8 2017-08-09 %D 2017 %R 10.1016/j.ces.2017.08.009 %K Phase-field simulation %K Cahn-Hilliard model %K Mobility %K Membranes %Z Chemical Sciences/Material chemistryJournal articles %X This paper presents a phase-field simulation of phase separation for a polymer/solvent system and aims at investigating in a systematic way the influence of the mobility model on the simulation results. In 2D geometry, the Flory-Huggins theory was used to describe the thermodynamics of the PMMA/cyclohexanol system and four mobility models were tested: a constant model, a slow model, a fast model and a mobility model based on the free-volume theory of Vrentas. The simulated patterns were analyzed by Fourier transform and using Minkowski descriptors. Growth laws deduced from a Fourier Transform of the patterns exhibited that the power laws were ranged between 1/5 and 1/3 depending on the quenching conditions ( and initial composition) and the mobility model. Using the Vrentas mobility model, growth laws of , and were found for initial compositions in the range , and , respectively, whereas due to faster phase inversion dynamics, a growth law close to was simulated for the constant mobility model whatever the quenching conditions ( and initial composition), thus demonstrating the importance to choose an appropriate mobility model for simulating the phase separation of polymer/solvent system. %G English %L cea-01591206 %U https://cea.hal.science/cea-01591206 %~ CEA %~ CNRS %~ ENSC-MONTPELLIER %~ IEM %~ PUBNIMBE %~ INC-CNRS %~ IRAMIS-NIMBE %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ CEA-UPSAY-SACLAY %~ CHIMIE %~ UNIV-MONTPELLIER %~ TEST-HALCNRS %~ ANR %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ UM-2015-2021