| Numéro |
J. Physique Lett.
Volume 42, Numéro 13, juillet 1981
|
|
|---|---|---|
| Page(s) | 305 - 307 | |
| DOI | https://doi.org/10.1051/jphyslet:019810042013030500 | |
J. Physique Lett. 42, 305-307 (1981)
DOI: 10.1051/jphyslet:019810042013030500
1 Equipe Physico-Chimie Moléculaire, Section de Physique du Solide, Département de Recherche Fondamentale, Centre d'Etudes Nucléaires de Grenoble, 85 X, 38041 Grenoble Cedex, France
2 Department of Chemistry, Polymer Program, University of Lowell, Lowell, Massachusetts, 01854 U.S.A.
6130G - Orientational order of liquid crystals in electric and magnetic fields.
6140K - Structure of polymers, elastomers, and plastics.
7660 - Nuclear magnetic resonance and relaxation condensed matter.
Key words
molecular orientation -- nematic liquid crystals -- polymers -- proton magnetic resonance -- proton NMR -- alignment -- thermotropic nematic polymer -- magnetic field -- nematic phases -- nematic order parameter
DOI: 10.1051/jphyslet:019810042013030500
Evidence by proton NMR of the alignment of a thermotropic nematic polymer by a magnetic field of ˜ 1 tesla
F. Volino1, A.F. Martins1, R.B. Blumstein2 et A. Blumstein21 Equipe Physico-Chimie Moléculaire, Section de Physique du Solide, Département de Recherche Fondamentale, Centre d'Etudes Nucléaires de Grenoble, 85 X, 38041 Grenoble Cedex, France
2 Department of Chemistry, Polymer Program, University of Lowell, Lowell, Massachusetts, 01854 U.S.A.
Abstract
A thermotropic polymer is studied by proton NMR in the solid and in the nematic phases. It is shown that this polymer macroscopically aligns in a magnetic field of ˜ I T. The corresponding nematic order parameter is estimated.
Résumé
On étudie un polymère nématogène thermotrope dans les phases solide et nématique, par RMN du proton. On montre que ce polymère s'aligne dans un champ magnétique de ˜ I T. On estime le paramètre d'ordre nématique correspondant.
6130G - Orientational order of liquid crystals in electric and magnetic fields.
6140K - Structure of polymers, elastomers, and plastics.
7660 - Nuclear magnetic resonance and relaxation condensed matter.
Key words
molecular orientation -- nematic liquid crystals -- polymers -- proton magnetic resonance -- proton NMR -- alignment -- thermotropic nematic polymer -- magnetic field -- nematic phases -- nematic order parameter