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Solvent-induced damage in polyimide thin films

Published online by Cambridge University Press:  31 January 2011

M.S. Hu ,
M.Y. He  and
A.G. Evans
M.S. Hu
Affiliation:
Materials Department, College of Engineering, University of California, Santa Barbara, California 93106
M.Y. He
Affiliation:
Materials Department, College of Engineering, University of California, Santa Barbara, California 93106
A.G. Evans
Affiliation:
Materials Department, College of Engineering, University of California, Santa Barbara, California 93106
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Abstract

Solvent induced crazes formed in strained polyimide thin films on different substrates have been studied. A fracture mechanics approach has been used to simulate craze evolution. The experiments and simulations have identified a critical prestrain below which craze formation does not occur. This strain decreases with increase in solvent exposure time, but also exhibits a threshold. Diffusion of the solvent into the film is considered to be responsible for the time-dependent nature of damage formation.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 6 , June 1991 , pp. 1374 - 1383
Copyright
Copyright © Materials Research Society 1991

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