Diffusion of water in sulfonated polystyrene ionomers

被引：0
作者：
N. R. Manoj
D. Ratna
R. A. Weiss
机构：
[1] Naval Materials Research Laboratory Anand Nagar,
[2] Institue of Materials Science University of Connecticut,undefined
来源：
Macromolecular Research | 2004年 / 12卷
关键词：
diffusion; sorption; barrier polymers; ionic polymers; ionomers; sulfonated polystyrene;
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学科分类号：
摘要：
Using gravimetry, we have studied the diffusion of water into sulfonated polystyrene ionomers . Diffusion coefficients were calculated from Fick’s equation. The water sorption was found to be dependent on the ion content (3.6–11 mol%) and the nature of the cation (H, Na, Li, or Zn). The sorption kinetics indicates a slight deviation from Fickian behavior. We used the analytical solution of Fick’s equation to evaluate the concentration profiles, which are in good agreement with the experimental results.
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页码：26 / 31
页数：5
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