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Effect Of Moisture On The Physical Properties Of Polyimide Films

Published online by Cambridge University Press:  15 February 2011

Rajeevi Subramanian ,
Michael T. Pottiger ,
Jacqueline H. Morris  and
Joseph P. Curilla
Rajeevi Subramanian
Affiliation:
Du Pont Electronics, P.O. Box 80336, Experimental Station, Wilmington, DE, 19880–0336.
Michael T. Pottiger
Affiliation:
Du Pont Electronics, P.O. Box 80336, Experimental Station, Wilmington, DE, 19880–0336.
Jacqueline H. Morris
Affiliation:
Du Pont Electronics, P.O. Box 80336, Experimental Station, Wilmington, DE, 19880–0336.
Joseph P. Curilla
Affiliation:
Du Pont Electronics, P.O. Box 80336, Experimental Station, Wilmington, DE, 19880–0336.
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Abstract

Moisture absorption and its effect on electrical properties were measured for several polyimides. A Quartz Crystal Microbalance (QCM) was used to investigate the moisture absorption in BPDA/PPD, PMDA/ODA, and BTDA//ODA/MPD polyimides. The steady-state moisture uptake in polyimides as a function of relative humidity (RH) was determined by exposing film samples to successively higher RH values ranging from 10 to 85% at 25°C. The isothermal moisture absorption as a function of percent RH was found to be nearly linear for all of the polyimides studied. The effect of moisture on the electrical properties of a BPDA/PPD polyimide was also investigated. The relative dielectric constant at 25 °C was found to be a linear function of the moisture absorbed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 227: Symposium J – Materials Science of High Temperature Polymers for Microelectronics , 1991 , 147
Copyright
Copyright © Materials Research Society 1991

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References

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