Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-15T02:32:01.150Z Has data issue: false hasContentIssue false
  • English
  • Français

Polymerization and Properties of Polymer-Stabilized Ferroelectric Liquid Crystals

Published online by Cambridge University Press:  29 November 2013

Christopher N. Bowman  and
C. Allan Guymon
Get access

Extract

The following is based on the presentation made by Christopher N. Bowman, recipient of the MRS Outstanding Investigator Award, at the 1997 MRS Spring Meeting.

I would like to focus on our recent work involving photopolymerizations of monomers in a liquid-crystalline environment. This work is one of the many aspects of photopolymerizations that we are focusing on at the University of Colorado. In particular this effort concentrates on understanding the influence of a liquid-crystalline medium and monomer segregation on polymerization behavior and polymer structure. These studies are of considerable importance for polymer-stabilized ferroelectric liquid crystals (FLCs) because of the enormous potential impact on the area.

I will briefly introduce liquid crystals (LCs), FLCs, and photopolymerizations. I will then discuss the observed electrooptic properties and how these properties change as the LC phase during polymerization is varied. Finally I will address how polymerization kinetics are affected by the LC phase and monomer segregation. This discussion will include results from x-ray diffraction, polarized infrared spectroscopy, and differential scanning calorimetry experiments.

Type
Technical Features
Information
MRS Bulletin , Volume 22 , Issue 9 , September 1997 , pp. 15 - 20
Copyright
Copyright © Materials Research Society 1997

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.Guymon, C.A., Hoggan, E.N., Walba, D.M., Clark, N.A., and Bowman, C.N., Liq. Cryst. 19 (1995) p. 719.CrossRefGoogle Scholar
2.Walba, D.M., Science 270 (1995) p. 250.CrossRefGoogle Scholar
3.Lester, G., Coles, H., Murayama, A., and Ishikawa, M., Ferroelectrics 148 (1993) p. 389.CrossRefGoogle Scholar
4.Kannurpatti, A.R., Peiffer, R.W., Guymon, C.A., and Bowman, C.N., in Polymers in Optics: Physics, Chemistry and Applications, vol. CR63, edited by Lessard, R.A. and Frank, W.A. (SPIE Press, Bellingham, WA, 1996) p. 136.Google Scholar
5.Hikmet, R.A.M., Boots, H.M.J., and Michielsen, M., J. Appl. Phys. 79 (1996) p. 8098.CrossRefGoogle Scholar
6.Yang, D-K., Chien, L-C., and Fung, Y.K., in Liquid Crystals in Complex Geometries Formed by Polymer and Porous Networks, edited by Crawford, G.P. and Zumer, S. (Taylor & Francis, London, 1996) p. 103.Google Scholar
7.Anseth, K.S., Newman, S.M., and Bowman, C.N., Adv. Polym. Sci. 122 (1995) p. 177.CrossRefGoogle Scholar
8.Anseth, K.S. and Bowman, C.N., J. Polym. Sci., Polym. Phys. Ed. 33 (1995) p. 1769.CrossRefGoogle Scholar
9.Goodner, M.D., Lee, H.R., and Bowman, C.N., Ind. Eng. Chem. Res. 36 (1997) p. 1247.CrossRefGoogle Scholar
10.Anseth, K.S., Kline, L.M., Walker, T.A., Anderson, K.J., and Bowman, C.N., Macromolecules 28 (1995) p. 2491.CrossRefGoogle Scholar
11.Guymon, C.A., Dougan, L.A., and Bowman, C.N., in Advances in Photopolymerization: Fundamentals and Applications, edited by Bowman, C.N., Scranton, A.B., and Peiffer, R.W. (American Chemical Society, Washington, DC) in press.Google Scholar
12.Broer, D.J., Hikmet, R.A.M., and Challa, G., Makromol. Chem. 190 (1989) p. 3201.CrossRefGoogle Scholar
13.Hoyle, C.E. and Watanabe, T., Macromolecules 27 (1994) p. 3790.CrossRefGoogle Scholar
14.Guymon, C.A., Hoggan, E.N., Clark, N.A., Rieker, T.P., Walba, D.M., and Bowman, C.N., Science 275 (1997) p. 57.CrossRefGoogle Scholar
15.Guymon, C.A. and Bowman, C.N., Macromolecules 30 (1997) p. 1594.CrossRefGoogle Scholar
16.Guymon, C.A. and Bowman, C.N., Macromolecules 30 (1997) p. 1594. in press.CrossRefGoogle Scholar