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The Sensitivity of Small Molecule Sorption to Annealing inGlassy Liquid Crystalline Polymers

Published online by Cambridge University Press:  15 February 2011

Atsushi Morisato ,
N. R. Miranda ,
J. T. Willits ,
G. R. Cantrell ,
B. D. Freeman ,
H. B. Hopfenberg ,
S. Makhija ,
I. Haider  and
M. Jaffe
Atsushi Morisato
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695
N. R. Miranda
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695
J. T. Willits
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695
G. R. Cantrell
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695
B. D. Freeman
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695
H. B. Hopfenberg
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695
S. Makhija
Affiliation:
Hoechst Celanese Corp., Robert L. Mitchell Technical Center, 86 Morris Ave., Summit, NJ 07901
I. Haider
Affiliation:
Hoechst Celanese Corp., Robert L. Mitchell Technical Center, 86 Morris Ave., Summit, NJ 07901
M. Jaffe
Affiliation:
Hoechst Celanese Corp., Robert L. Mitchell Technical Center, 86 Morris Ave., Summit, NJ 07901
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Abstract

The sorption of organic penetrants is found to be sensitive to thermalannealing conditions in a series of glassy, nematic, thermotropic, randomcopolyesters. Controlled thermal annealing of two polymers in this seriespermitted a systematic variation of chain packing and, presumably, higherorder molecular suprastructure, ranging from a disordered amorphousmorphology to More ordered nematic liquid crystalline and semi-crystallinemorphologies. The development of liquid crystalline order appears to reduceor preclude small molecule solubility in nematically ordered forms of thesepolymers.

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References

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