Lyotropic nematics : molecular aggregation and susceptibilities
- 1 January 1979
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 40 (22), 587-592
- https://doi.org/10.1051/jphyslet:019790040022058700
Abstract
Alterations of the concentrations of certain components in a lyotropic nematic mesophase may change the sign of the anisotropy of its magnetic susceptibility, Δχ. We report here : 1) the determination of the sign of Δχ by optical observation of the textures in the presence of a magnetic field, 2) the results of an X-ray diffraction study of the aggregation of the amphiphilic molecules. We conclude that the inversion of Δχ results from the different shapes of the aggregatesKeywords
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