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Melt Diffusion in Model Liquid Crystalline Polyiers

Published online by Cambridge University Press:  25 February 2011

E. Hall ,
C.K. Ober ,
E.J. Kramer ,
R.H. Colby ,
J.R. Gillmor  and
G. Galli
E. Hall
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853-1501
C.K. Ober
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853-1501
E.J. Kramer
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853-1501
R.H. Colby
Affiliation:
Corporate Research Laboratories, Eastman Kodak Company, Rochester, NY, 14650-2110
J.R. Gillmor
Affiliation:
Corporate Research Laboratories, Eastman Kodak Company, Rochester, NY, 14650-2110
G. Galli
Affiliation:
Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy
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Abstract

Diffusion of model main-chain and side-chain liquid crystalline polymers was studied in the nematic phase. The concentration of deuterium labeled polymer vs. depth in a thick matrix layer was profiled with Forward Recoil Spectrometry to determine diffusion coefficients. In each system, the tracer diffusion coefficient was measured as a function of temperature, and correlated both with phase transitions determined by thermal analysis and with melt viscosity data.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 248: Symposium O – Complex Fluids , 1991 , 113
Copyright
Copyright © Materials Research Society 1992

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References

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