摘要
本文对高分子材料中的非Ｆｉｃｋ 扩散的机理进行了研究，采用了扩散与粘弹性模型相结合的方法来刻画这一现象，同时考虑了溶剂的移动的影响，建立了带有可动边界的数学模型，运用奇异摄动方法对此模型进行了解析。
Machanism of non Fickian diffusion was studied. The diffusion equation and viscoelastic stress model were coupled. At the same time we derived a model with moving boundary conditions and solved it using singular perturbation technique. The obtained concentration profiles were in good agreement with observations.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
1999年第4期441-450,共10页
Chinese Journal of Biomedical Engineering
关键词
玻璃状
高分子材料
非Fick扩散
粘弹必模型
Glassy polymer
Non Fickian diffusion
Viscoelastic model
Moving boundary
Singular perturbation
