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Investigation of Polymer Stabilized Liquid Crystal Formation Using Fluorinated and Aliphatic Monoacrylates

Published online by Cambridge University Press:  15 March 2011

Demetrius McCormick  and
C. Allan Guymon
Demetrius McCormick
Affiliation:
Department of Polymer Science, University of Southern Mississippi, Hattiesburg, MS 39406-0076, [email protected], [email protected]
C. Allan Guymon
Affiliation:
Department of Polymer Science, University of Southern Mississippi, Hattiesburg, MS 39406-0076, [email protected], [email protected]
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Abstract

This study focuses on the photo-polymerization of a fluorinated monoacrylate monomer and aliphatic analog within a room temperature smectic liquid crystal (LC) in an effort to understand how factors such as LC order, monomer segregation, and monomer chemical structure affects the polymerization mechanism in polymer stabilized liquid crystalline systems (PSLC). Specifically, a fluorinated monoacrylate exhibits significantly enhanced polymerization rates when compared to an aliphatic monoacrylate. Moreover, this rate enhancement is particularly pronounced in the smectic phase of the LC, where the fluorinated monoacrylate displays a polymerization rate in the smectic phase that is over three times faster than the aliphatic monoacrylate in the smectic phase. Also the fluorinated monoacrylate exhibits enhanced segregation between the smectic layers of the LC both before and after polymerization, whereas the aliphatic monoacrylate phase separates during polymerization. The results of this study demonstrate how changes in the monomer chemical structure (i.e. fluorination) can significantly impact the polymerization mechanism and segregation in polymer stabilized systems. This study also offers the potential to further the understanding of tailoring these unique systems for display applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 709: Symposium CC – Advances in Liquid Crystalline Materials and Technologies , 2001 , CC6.2.1
Copyright
Copyright © Materials Research Society 2002

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References

REFERENCES

1) Doane, J.W. In Liquid Crystals-Applications and Uses; Bahadur, B., Ed.; World Scientific: Singapore, 1990; Vol. 1.Google Scholar
2) Hikmet, R.A.M.; Michielsen, M. Adv. Mater. 1995, 7, 300.Google Scholar
3) Strass, J.; Kitzerow, H.S. Appl. Phys. Lett. 1996, 69, 725.Google Scholar
4) Dierking, I.; Kosbar, L.L.; Lowe, C.; Held, G.A. Liq. Cryst. 1998, 24, 387.Google Scholar
5) Dierking, I.; Kosbar, L.L.; Held, G.A. Appl. Phys. Lett. 1997, 71, 2454.Google Scholar
6) Guymon, C.A.; Bowman, C.N. Macromolecules 1997, 30, 1594.Google Scholar
7) Guymon, C.A.; Bowman, C.N. Macromolecules 1997, 30, 5271.Google Scholar
8) McCormick, D.T.; Chavers, R.; Guymon, C.A. Macromolecules 2001, 34, 6929.Google Scholar
9) Gangal, S.V. In Encyclopedia of Polymer Science; Mark, H.F., Blikales, N.M., Overberger, C.G. Menges, G., Eds.; Wiley-Interscience: New York, 1989; Vol. 16, p 577.Google Scholar
10) Bunning, T.J.; Schulte, M.D.; Clarson, S.J.; Natarajan, L.V.; Tomlin, D.W. Liq. Cryst. 2000, 27, 467.Google Scholar