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An alternative analysis of water vapor and gas transport in polyimide films

Published online by Cambridge University Press:  31 January 2011

H. Ouyang  and
Sanboh Lee
H. Ouyang
Affiliation:
Institute of Materials Engineering, National Chung Hsing University, Taichung, Taiwan, Republic of China
Sanboh Lee
Affiliation:
Department of Materials Science, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
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Abstract

The water vapor and gas transport in polyimide films were analyzed using Harmon's model with accounts for case I transport and case II transport. Harmon's model was in good agreement with the experimental data. The diffusion coefficient obtained by Harmon's model was smaller than that obtained by using the short-time slope of mass uptake versus time with the exception of CO2 in polyimide. A comparison of the present model and the dual-mode sorption model, in which populations follow Henry's law and Langmuir type, was made.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 10 , October 1997 , pp. 2794 - 2798
Copyright
Copyright © Materials Research Society 1997

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References

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