Accessibility navigation


Dielectric relaxation around the nematic-isotropic transition of liquid crystalline polymers

Alegria, A., Echave, J.M., Davis, F.J. ORCID: https://orcid.org/0000-0003-0462-872X, Guo, W. and Mitchell, G.R. (1994) Dielectric relaxation around the nematic-isotropic transition of liquid crystalline polymers. Journal of Non-Crystalline Solids, 172-174 (2). pp. 966-971. ISSN 0022-3093

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1016/0022-3093(94)90607-6

Abstract/Summary

This study is concerned with a series of acrylate based side-chain liquid crystalline (LC) polymers. Previous studies have shown that these LC polymers have a preference for parallel or perpendicular alignment with respect to the polymer chain which depends on the length of the coupling chain joining the mesogenic unit to the polymer backbone. On the other hand, the dielectric relaxation of these side-chain LC polymers shows a strong relaxation associated to the mesogenic unit dynamics. For samples with parallel alignment, it was found that the dielectric relaxation of the nematic is weaker and broader than the relaxation of the isotropic. By contrast, for samples with perpendicular alignment, the isotropic to nematic transition reduces the broadening the relaxation and increases the relaxation strength. These two features are more evident for samples with short coupling units for which the dielectric relaxation observed appears to be strongly coupled with the backbone dynamics.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Electron Microscopy Laboratory (CAF)
ID Code:26755
Publisher:Elsevier

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation