Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-17T14:06:51.766Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic Orientation of Polymers A Novel Technique of Controlling Birefringence

Published online by Cambridge University Press:  21 March 2011

Tsunehisa Kimura  and
Eiko Ito
Tsunehisa Kimura
Affiliation:
Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan
Eiko Ito
Affiliation:
Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan
Get access

Abstract

Magnetic -field induced orientation of crystalline polymers recently reported by our group is briefly summarized and a possible application of this new phenomenon is presented. We have recently reported a new finding that crystalline polymers including poly(ethylene-2,6-naphthalate), isotactic polystyrene, isotactic polypropylene, poly(ethylene terephthalate), and paraffin align under a strong magnetic field during the phase transition from melt to crystal. We have assumed that some ordered structure, most likely liquid-crystalline-like structure, appearing transiently during the transition is responsible for this phenomenon. Aligned films were transparent and exhibited retardation of several hundred nanometers, suggesting a possible application to fabrication of materials demanded for optical use.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB3.1
Copyright
Copyright © Materials Research Society 1999

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. Kimura, T., Ezure, H., Sata, H., Kimura, F., Tanaka, S. and Ito, E., Mol. Cryst. Liq. Cryst., 318, 141 (1998).Google Scholar
2. Sata, H., Kimura, T., Ogawa, S., Yamato, M. and Ito, E., Polymer, 37, 1879 (1996).Google Scholar
3. Sata, H., Kimura, T., Ogawa, S. and Ito, E., Polymer, 39, 6325 (1998).Google Scholar
4. Ezure, H., Kimura, T., Ogawa, S. and Ito, E., Macromolecules, 30, 3600 (1997).Google Scholar
5. Kawai, T. and Kimura, T., Polymer, 41, 155 (2000).Google Scholar
6. Kimura, T., Kawai, T. and Sakamoto, Y., Polymer, 41, 809 (2000).Google Scholar
7. Kimura, T., Yamato, M., Koshimizu, W. and Kawai, T., Chem. Lett., 1057 (1999).Google Scholar
8. Kimura, F., Kimura, T., Sugisaki, A., Komatsu, M., Sata, H. and Ito, E., J. Polym. Sci., Polym. Phys., 35, 2741 (1997).Google Scholar