ABSTRACT
Based on the characteristics and composition of the lamellar liquid crystal, its forming equation was proposed for the first time. It was found that the predicted location and shape of a liquid crystalline region by the equation match well with experimental results. The predicted size of the region is greater lhan the experimentally determined one. The proposed forming equation for the lamellar liquid crystal provides a new tool lor determining the liquid crystalline region in multicomponent systems. This niav be useful in both basic theoretical research and industrial applications