Modeling of diffusion through polymeric membranes

被引：0
作者：
Quan Liu
D. De Kee
机构：
[1] Tulane University,Department of Chemical and Biomolecular Engineering and Tulane Institute for Macromolecular Engineering and Science (TIMES)
来源：
Rheologica Acta | 2005年 / 44卷
关键词：
Diffusion; Hamiltonian formulation; Dissipation bracket;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Diffusion, coupled with rheology, of a simple fluid through a complex polymeric membrane is modeled using the Poisson and dissipation bracket formalism. A set of governing equations describing the time evolution of concentration, flux, and internal structure of the complex polymeric membrane is obtained. Two parameters, which characterize the importance of elasticity and mixing properties, appear in the governing equations. An extension of Fick’s second law is derived for the flux evolution. The model describes the diffusion process quantitatively quite well.
引用
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页码：287 / 294
页数：7
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