Hostname: page-component-6bf8c574d5-mggfc Total loading time: 0 Render date: 2025-02-22T08:17:33.580Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Misyan, A., Ober, C.K., Polymer Bulletin, 23, 535 (1990).Google Scholar
2. Angelopoulos, E. H., Ober, C. K., Kramer, E. J., Polymeric Materials: Science and Engineering, Proceedings of the ACS PMSE Division,3, 450 Washington, D.C.(1990).Google Scholar
3. Angeloni, A. S., Caretti, D., Carlini, C., Chiellini, E., Galli, G., Altomare, A., Solaro, R., Laus, M., Liquid Crystals, 4, (1989).Google Scholar
4. Mills, P.J., Green, P.F., Palstrom, C.J., Kramer, E.J., Appl. Phys. Lett. 45, 957 (1984).Google Scholar
5. Wissbrun, K. F., Journal of Rheology, 2a, 619 (1981).Google Scholar
6. Bird, R. B., Armstrong, R. C. and Hassager, O., Dynamics of Polymeric Liquids, Wiley, New York (1977).Google Scholar
7. Ferry, J. D., Viscoelastic Properties of Polymers, Wiley, New York (1980).Google Scholar