Structure,free energy of adhesion and disjoining pressure in a solid-nematic thermotrope system

Summary Monolayers of hexadecyltrimethylammonium bromide produce homeotropic or planar alignments of liquid crystals p-n-methoxybenzilidene aniline and pmethoxyphenylazo-p-butylbenzene.The effect of the temperature on the free energy of adhesion and on the wetting hysteresis shows that for the planar structure at the solid-liquid interface a thick liquid film is formed on the solid; the existence of this thick liquid film is attributed to the elastic energy imposed on a liquid crystal by different anchorages at the solid-liquid and liquid-vapor interfaces.

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Zusammenfassung Monomolekulare Schichten von Hexadecyltrimethylammoniumbromid erzeugen homeotrope oder planare Anordnung von Flüssigkristallen wie p-nMethoxybenzilidin-anilin und p-Methoxyphenylazo-p-butylbenzol.