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对壬基酚聚氧乙烯醚（IgepalCO）系列表面活性剂，生成何种溶致液晶与其EO基团数n有关，而在何浓度范围内生成溶致液晶则与生成溶致液晶的最低水含量及最大水增溶量有关．EO基团数n小于10时，生成层状液晶，n大于10时则生成六角状液晶，层状液晶两亲双层内，水与表面活性剂的最低摩尔比rmin和最高摩尔比rmax随EO基团数n增加分别是非线型增加与线型增加，在IgepalCO520（n＝5）中加入IgepalCO710（n＝10．5），对层状液晶的生成无显著影响，在IgepalCO710中加入IgepalCO520，则对六角状液晶的生成产生显著影响，出现了六角状液晶向层状液晶的转变。
For nonylphenol polyoxyethylene ether (IgepalCO) surfactants, what kind of lyotropic liquid crystal was generated was related to the number of EO groups n, whereas the formation of lyotropic liquid crystals in the concentration range was related to the lowest water content of lyotropic liquid crystals And the maximum amount of water solubilization. When the number of EO groups n is less than 10, layered liquid crystal is formed, and when n is larger than 10, hexagonal liquid crystal is formed. In the layered double crystal layer of liquid crystal, the minimum molar ratio rmin of water to surfactant and the maximum molar ratio rmax IgepalCO710 (n = 10.5) was added to IgepalCO520 (n = 5), which had no significant effect on the formation of lamellar liquid crystals. When IgepalCO520 was added to IgepalCO710, the increase of number of groups n was nonlinear increase and linear increase respectively. The formation of hexagonal liquid crystal has a significant impact, there has been a hexagonal liquid crystal to the layered liquid crystal transition.