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Novel Piezoelectric Polyimides

Published online by Cambridge University Press:  10 February 2011

Joycelyn O. Simpson ,
Sharon S. Welch  and
Terry L. St.Clair
Joycelyn O. Simpson
Affiliation:
Composites and Polymers Branch
Sharon S. Welch
Affiliation:
Guidance and Controls Branch NASA Langley Research Center, Hampton, VA 23666-0001
Terry L. St.Clair
Affiliation:
Composites and Polymers Branch
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Abstract

This research focuses on the synthesis, processing, and characterization of novel high performance piezoelectric polymers. A series of polyimides containing pendant, polar trifluoro (-CF 3) and nitrile (-CN) groups have been synthesized, electroded and poled. Measurements of the piezoelectric sensor response are presented to demonstrate the relationship between dipole concentration and the level of piezoelectricity for these materials. An understanding of the effect of dipole concentration on piezoelectric properties will enable the molecular design of polymers possessing distinct improvements over state of the art piezoelectric polymers including enhanced polarizability, polarization stability at elevated temperatures, and increased mechanical integrity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 413: Symposium W – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials III , 1995 , 351
Copyright
Copyright © Materials Research Society 1996

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References

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