Some Effects of Water Immersion on the Mechanical Behavior of a Polyimide Film

[+] Author and Article Information
B. D. Harper, J. M. Rao

Department of Engineering Mechanics, The Ohio State University, Columbus, OH 43210

J. Electron. Packag 116(4), 317-319 (Dec 01, 1994) (3 pages) doi:10.1115/1.2905704 History: Received August 16, 1993; Revised September 15, 1994; Online April 28, 2008


Absorbed moisture is generally thought to have a plasticizing effect upon the mechanical behavior of polymers. This paper presents some experimental results illustrating the effects of water immersion upon the room temperature creep and stress-strain behavior of a polyimide film. It is shown that immersion in water results in antiplasticization as demonstrated by a significant increase in stiffness and decrease in time dependence. These effects were found to be reversible following thermal conditioning at 300°C.

Copyright © 1994 by The American Society of Mechanical Engineers
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