Dispersion control and nematic ordering of Ni/Al layered double hydroxide suspensions
作者： Lingyu Luan , Shangying Liu , Dejun Sun
DOI: 10.1016/J.JSSC.2009.03.006
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摘要: Abstract In this paper, we report the preparation of aqueous suspensions Ni/Al layered double hydroxide (LDH) nanoparticles by a non-steady co-precipitation followed peptization. By choosing suitable peptization temperature and time, well-dispersed were obtained. Meanwhile, particle size, shape size polydispersity can be efficiently controlled. Nematic ordering is observed in colloidal LDH confirmed birefringence observations SAXS measurements. Furthermore, showed that sol–gel transition takes place after liquid crystalline phase concentrated suspensions. The absence isotropic–nematic separation attributed to fact nematic droplets are too small settle bottom cuvette.
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