Rheological properties and density of liquid-crystal 4-(ω-hydroxyalkyloxy)-4'-cyanobiphenyls

The temperature dependences of the density and dynamic viscosity for the nematic and isotropic phases of 4-(ω-hydroxyalkyloxy)-4'-cyanobiphenyl (n = 3, 6, 8) and 4-alkoxy-4'-cyanobiphenyl (n = 6, 8) liquid crystals were obtained. The terminal hydroxy group was found to affect the molecular packing and viscosity of nematic cyanobiphenyls.