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Masked edge effects when measuring diffusion coefficients with the cup method

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Author

Summary, in English

When diffusion coefficients are measured with the cup method, the exposed area is often less than the area of the sample. Because of this masking effect the measured diffusion coefficient is overestimated. The present article presents simple formulas based on two-dimensional analytical solutions to correct for this in cylindrical cup samples. Different cases of anisotropical diffusion are dealt with. The error in the analytical solutions is determined by numerical computer simulations.

Publishing year

1994

Language

English

Pages

821-826

Publication/Series

Polymer Engineering and Science

Volume

34

Issue

10

Document type

Journal article

Publisher

John Wiley & Sons Inc.

Topic

  • Materials Engineering
  • Building Technologies

Status

Published

ISBN/ISSN/Other

  • ISSN: 1548-2634