Ion Diffusion Coefficients Through Polyelectrolyte Multilayers: Temperature and Charge Dependence

Langmuir ◽  
2011 ◽  
Vol 27 (13) ◽  
pp. 8241-8247 ◽  
Author(s):  
Ramy A. Ghostine ◽  
Joseph B. Schlenoff
Keyword(s):  
Diffusion Coefficients ◽  
Polyelectrolyte Multilayers ◽  
Ion Diffusion ◽  
Charge Dependence

The precision measurement of single ion diffusion coefficients

1958 ◽  
Vol 11 (1) ◽  
pp. 1
Author(s):  
R Mills ◽  
EW Godbole
Keyword(s):  
Precision Measurement ◽  
Diffusion Coefficients ◽  
Electrolyte Solutions ◽  
Radioactive Material ◽  
Ion Diffusion ◽  
Capillary Method ◽  
Dilute Electrolyte Solutions

The precision measurement of single ion diffusion coefficients in dilute electrolyte solutions would be of considerable value. A method is described which is capable of giving the required precision. It involves a modification of the open-ended capillary method by enclosure of the capillary of diffusing radioactive material in a scintillator so that its contents can be continually monitored during the course of diffusion.

Werkstoffaufbau und diffusiver Stofftransport aufgezeigt an ausgewählten Beispielen / Material structure and diffusive mass transport as pointed out by means of selected examples

2000 ◽  
Vol 6 (4) ◽  
pp. 429-450
Author(s):  
R. Kriegel ◽  
A. Buchwald ◽  
Ch. Kaps
Keyword(s):  
Mass Transport ◽  
Diffusion Coefficients ◽  
Transport Mechanism ◽  
Diffusion Models ◽  
Second Law ◽  
Material Structure ◽  
Ion Diffusion ◽  
Oxygen Ion ◽  
Oxygen Ion Diffusion

Abstract The diffusive mass transport in materials is above all determined by the material structure. The experimental determination of diffusion coefficients is based on diffusion models, which results from special mathematical solutions of Fick's second law and its corresponding boundary conditions. The general usefulness of these diffusion models will be described using some examples, e. g. the diffusion of deteriorating salts in masonry materials, the oxygen ion diffusion in mixed conducting ceramics and the cation exchange in single crystals. The measurement of the diffusion coefficients results in a better comprehension of the transport mechanism as well as of the "morphology" of the transport medium, which allows to optimize the conditions of the mass transport and the material structure and composition, respectively.

scholarly journals Modeling of ion diffusion coefficients in concrete considering with hydration and temperature effects.

2003 ◽  
pp. 131-142 ◽  
Author(s):  
Kosuke YOKOZEKI ◽  
Kenzo WATANABE ◽  
Daisuke HAYASHI ◽  
Noboru SAKATA ◽  
Nobuaki OTSUKI
Keyword(s):  
Diffusion Coefficients ◽  
Temperature Effects ◽  
Ion Diffusion
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