Additive-containing lyotropic liquid crystal constructed by cationic surfactant and anionic surfactant as well as preparation method thereof

The invention discloses a lyotropic preparation method capable of synergistically promoting formation of a lyotropic liquid crystal by jointly adding n-hexanol and sodium bromide in a CTAB/SDS/H2O compound system. According to the method, the stability of a cationic surfactant and a anionic surfactant in an aqueous solution is greatly enhanced, the NaBr and the n-hexanol can synergistically promote the growth of a system ordered combination body, the surface activity of the surfactants is obviously enhanced, and an important area, namely a liquid crystal area, in a system phase behavior is obviously widened, so that the use efficiency of the surfactants is improved and the use cost is reduced. 本发明公开了种在CTAB/SDS/HO复配体系中共同加入正己醇和溴化钠，协同促进溶致液晶的形成的溶致制备方法。本发明大大加强阳离子表面活性剂和阴离子表面活性剂在水溶液中的稳定性，NaBr和正己醇可协同促进体系有序组合体的生长，显著增强表面活性剂的表面活性，使得体系相行为中个重要区域即液晶区得到明显的拓宽，进而提高表面活性剂的使用效率，降低使用成本。