Lattice Boltzmann simulation of asymmetric membrane formation by immersion precipitation

Lattice Boltzmann (LB) methods are employed to simulate the structural evolution of asymmetric membranes during the immersion precipitation fabrication process. A multi-phase, multi-component LB model is first developed, based on forcing interactions of the Flory–Huggins type. Boundary conditions sp...

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Bibliographic Details
Published inJournal of membrane science Vol. 249; no. 1; pp. 213 - 226
Main Authors Akthakul, Ariya, Scott, Christopher E., Mayes, Anne M., Wagner, Alexander J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2005
Subjects
Dynamically formed membranes
Lattice Boltzmann simulation
Membrane separation and structure
Phase separation
Theory
Dynamically formed membranes
Membrane separation and structure
Theory
Lattice Boltzmann simulation
Phase separation
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Summary:Lattice Boltzmann (LB) methods are employed to simulate the structural evolution of asymmetric membranes during the immersion precipitation fabrication process. A multi-phase, multi-component LB model is first developed, based on forcing interactions of the Flory–Huggins type. Boundary conditions specific to the process of immersion precipitation are then applied. Results of the time-dependent, two-dimensional simulation qualitatively capture major characteristics of asymmetric membrane formation such as membrane compaction and formation of a selective skin layer. Simulated effects of viscosity and forcing interactions on the final membrane structure agree qualitatively with experimental reports, suggesting the potential application of LB methods to process design for optimizing membrane morphology and performance.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2004.09.045