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Molecular Composites of Rodlike/Flexible Polyimides

Published online by Cambridge University Press:  21 February 2011

S. R. Rojstaczer ,
D.Y. Yoon ,
W. Volksen  and
B.A. Smith
S. R. Rojstaczer
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, CA 95120
D.Y. Yoon
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, CA 95120
W. Volksen
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, CA 95120
B.A. Smith
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, CA 95120
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Abstract

Mixtures of a rodlike and a flexible polyimide were prepared by solution-blending of the respective poly(amic alkyl ester) and poly(amic acid), followed by solvent evaporation and thermal imidization. The size scale of the phase separation, as measured by light scattering, is primarily set during the demixing of the precursor polymers, with no significant coarsening observed due to the imidization performed at 400°C. The observed variation of the domain size with parameters such as composition, molecular weight and film thickness is discussed in terms of the miscibility of the precursor polymers as well as the thermal history to which these were exposed.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 171: Symposium O – Polymer Based Molecular Composites , 1989 , 171
Copyright
Copyright © Materials Research Society 1990

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References

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