Splay mode behavior in a nematic mixture of DDA9 + PAA

Splay mode behavior in a nematic mixture of DDA9 + PAA

Quasielastic light scattering has been used to study the splay mode of p-azoxyanisole (PAA) and mixtures of a thermotropic main chain polymer liquid crystal, DDA9, with PAA in the nematic phase. The splay viscosity of the mixtures is substantially enhanced with respect to that of PAA. Of the two mix...

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Veröffentlicht in:The Journal of chemical physics 1991-10, Vol.95 (8), p.6039-6041
1. Verfasser: DEVANAND, K
Format: Artikel
Sprache:eng
Schlagworte:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Liquid crystals
Physics
Structure of solids and liquids
crystallography
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Zusammenfassung:Quasielastic light scattering has been used to study the splay mode of p-azoxyanisole (PAA) and mixtures of a thermotropic main chain polymer liquid crystal, DDA9, with PAA in the nematic phase. The splay viscosity of the mixtures is substantially enhanced with respect to that of PAA. Of the two mixtures studied, the temperature dependence of the splay mode decay rate for the mixture with the higher polymer concentration shows behavior atypical of conventional low molecular weight liquid crystals.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.461572