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Hierarchical Structures in Liquid Crystalline Polymers

Published online by Cambridge University Press:  21 February 2011

Linda C. Sawyer  and
Michael Jaffe
Linda C. Sawyer
Affiliation:
Hoechst Celanese Research Division, R. L. Mitchell Technical Center, 86 Morris Ave., Summit, New Jersey 07901
Michael Jaffe
Affiliation:
Hoechst Celanese Research Division, R. L. Mitchell Technical Center, 86 Morris Ave., Summit, New Jersey 07901
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Abstract

It is well known that the structure of highly oriented liquid crystalline polymers (LCPs) can be characterized by a hierarchical fibrillar structural model. Structure models were developed for the lyotropic aramid fibers and the thermotropic aromatic copolyester fibers during the last two decades showing the existence of fibrillar hierarchies. Hierarchies of structure have also been commonly observed for the biological materials. Concepts learned from the latter are useful in materials science studies today. The nature of the smallest nanostructure that aggregates, the combination of these small structures, typically microfibrils, into larger structures and the interaction of these hierarchical entities are important to understanding their behavior. The architecture of the whole of the polymer or the biological material is a further important variable as is the relation of the process with that architecture. This paper discusses details of the structure of LCPs and draws an analogy between the materials science and biological hierarchies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 255: Symposium Z – Hierarchically Structured Materials , 1991 , 75
Copyright
Copyright © Materials Research Society 1992

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References

1. Dobb, M.G., Johnson, D.J. and Saville, B.P., J. Polym. Sci., Polymer Symp., 58, 237 (1977).CrossRefGoogle Scholar
2. Schaefgen, J.R., Bair, T.I., Ballou, J.W., Kwolek, S.L., Morgan, P.W., Panar, M., and Zimmerman, J., in Ultra-hiah Modulus Polymers. edited by Ciferri, A. and Ward, I.M. (Applied Science Publishers, London, 1979) pp. 173.Google Scholar
3. Schaefgen, J.R., in The Strength and Stiffness of Polymers, edited by Zachariades, A. and Porter, R.S., (Marcel Dekker, New York, 1984) pp. 327.Google Scholar
4. Dobb, M.G. and McIntyre, J.E., in Advances in Polymer Science 60/61 (Springer-Verlag, Berlin, 1984).Google Scholar
5. Dobb, M.G., Johnson, D.J., and Saville, B.P., J. Polym. Sci. 15, 2201 (1977).Google Scholar
6. Dobb, M.G., Hendeleh, A.M., Johnson, D.J., and Saville, B.P., Nature 253, 189 (1975).Google Scholar
7. Bennett, S.C., Dobb, M.G., Johnson, D.J., Murray, R., and Saville, B.P., in Proc. EMAG 75 (Bristol, Academic Press, London, 1976) pp. 329.Google Scholar
8. Dobb, M.G., Johnson, D.J. and Saville, B.P., Polymer 22, 961 (1981).Google Scholar
9. Weng, T., Hiltner, A., and Baer, E., J. Mater. Sci. 21, 744 (1986).Google Scholar
10. Sawyer, L.C. and Jaffe, M., J. Mater. Sci. 21, 1897 (1986).Google Scholar
11. Sawyer, L.C. and Jaffe, M., in High Performance Polymers, edited by Baer, E. and Moet, A. (Carl Hanser Verlag, Germany, 1991) pp. 56.Google Scholar
12. Sawyer, L.C. and Grubb, D.T., Polymer Microscopy (Chapman and Hall, London, 1987).Google Scholar
13. Musselman, I.H., Russell, P.E., Chen, R.T., Jamieson, M.G. and Sawyer, L.C., in Proc. of the XIIth International Congress for Electron Microscopy, Seattle, August 1990, edited by Bailey, W. (San Francisco Press, San Francisco, 1990) pp. 866.CrossRefGoogle Scholar
14. Sawyer, L.C., Chen, R.T., Jamieson, M., Musselman, I.H. and Russell, P.E., J. Mater. Sci. Lett. (1992) in press.Google Scholar
15. Sawyer, L.C., Musselman, I.H., Chen, R.T., Jamieson, M. and Russell, P.E., J. Mater. Sci., submitted.Google Scholar
16. Sawyer, L.H. and George, W., in Cellulose and Other Natural Polymer Systems: Biogenesis. Structure. and Degradation. edited by Brown, R. Malcolm Jr. (Plenum, New York, 1982) pp. 429.CrossRefGoogle Scholar
17. Baer, E. and Moet, A., Eds., High Performance Polymers (Hanser, New York, 1991).Google Scholar
18. Sawyer, L.C., J. Polym. Sci., Polymer Letters Ed. 22 347 (1984).Google Scholar
19. Allen, S.R., Fillippov, A.G., Farris, R.J. and Thomas, E.L., in The Strength and Stiffness of Polymers, edited by Zachariades, A. and Porter, R.S., (Marcel Dekker, New York, 1984) pp. 357.Google Scholar
20. Donald, A.M. and Windle, A.H., J. Mater. Sci. 18, 1143 (1983).Google Scholar
21. Donald, A.M. and Windle, A.H., Coll. Polym. Sci. 261, 793 (1983).Google Scholar
22. Donald, A. M. and Windle, A.H., J. Mater. Sci. 19, 2085 (1984).Google Scholar
23. Krause, S.J., Vezie, D.L., Adams, W.W., Polymer Communications 30. 10 (1989).Google Scholar
24. Davies, G.R. and Ward, I.M., in High Modulus Polymers, edited by Zachariades, A. and Porter, R.S. (Marcel Dekker, New York, 1988).Google Scholar
25. Troughten, M.J., Unwin, A.P., Davies, G.R. and Ward, I.M., Polymer.29, 1389 (1988).Google Scholar
26. Green, D.I., Unwin, A.P., Davies, G.R. and Ward, I.M., Polymer 31, 579 (1990).Google Scholar
27. Green, D.I., Davies, G.R., Ward, I.M., Alhaj-Mohammed, M.H. and Jowad, S. Abdul, Polymers for Advanced Technologies 1, 41 (1990).Google Scholar
28. Allen, R.A. and Ward, I.M., Polymer 32, 203 (1991).CrossRefGoogle Scholar
29. Barham, P.J., Arridge, R.G.C., J. Polym. Sci., Polym. Phys. Ed. 15, 1177 (1977).Google Scholar
30. Yoon, H.N., Colloid and Poly. Sci., 268, 230 (1990).Google Scholar