Study on the microstructure and rheological property of fish oil lyotropic liquid crystal

► We prepared fish oil lytropic liquid crystals using Tween80, ethyl oleate and water. ► We further divide the lytropic liquid crystals region into lamellar phase and hexagonal phase by polarized optical microscopy and small angle X-ray scattering. ► Finally, we analyze the dynamic viscoelasticity of the liquid crystal samples. The lamellar phase is gel-like fluid and the hexagonal phase has viscoelastic behavior.