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Phase Separation Behaviors Of Polyimide Blends

Published online by Cambridge University Press:  10 February 2011

C. H. Ryu  and
Y. C. Bae
C. H. Ryu
Affiliation:
Department of Industrial Chemistry, Hanyang University, Seoul 133-791 Korea, ycbaer@email.hanyang.ac.kr
Y. C. Bae
Affiliation:
Department of Industrial Chemistry, Hanyang University, Seoul 133-791 Korea, ycbaer@email.hanyang.ac.kr
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Abstract

We investigated phase behaviors of polyimide blends such as polyethermide(PEI)/polystyrene(PS), PEI/polyamideimide(PAI), PEI/polyethyleneoxide(PEO), and PAI/PEO systems. Our sample systems exhibited lower critical solution temperature(LCST) phase behaviors. In the PEI/PS system, phase transition occurred near or above the glass transition temperature(Tg) of PS and the critical temperature of the system increased with decreasing molecular weight of PS. For PEI/PAI and PEI/PEO systems, the critical temperature of PEI/PAI system is higher than that of PEI/PEO system. Phase transition temperatures of PAI/PEO systems appeared near or below the melting point of PEO.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 511: Symposium E – Low Dielectric Constant Materials IV , 1998 , 87
Copyright
Copyright © Materials Research Society 1998

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References

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