合成了N-十二烷基-N-(2-羟乙基)-N,N-二甲基溴化铵、N-十四烷基-N-(2-羟乙基)-N,N-二甲基溴化铵和N-十六烷基-N-(2-羟乙基)-N,N-二甲基溴化铵等3个季铵盐阳离子表面活性剂.研究了它们以及N-十六烷基-N,N,N-三甲基溴化铵(CTAB)与阴离子表面活性剂十二烷基硫酸钠(SDS)复配系统在313.15K时的双水相行为.复配系统在两个非常狭窄的区域能形成双水相,两相区近似以等摩尔线为中心对称分布,随着阳离子表面活性剂碳链长度的增长,富含阳离子表面活性剂的双水相区向阴阳离子表面活性剂摩尔比减小的方向稍有移动. N-dodecyl-N- (2-hydroxyethyl) -N, N-dimethyl ammonium bromide, N-tetradecyl-N- - quaternary ammonium salt cationic surfactants such as dimethyl ammonium bromide and N-hexadecyl-N- (2-hydroxyethyl) -N, N-dimethyl ammonium bromide, etc. They were studied as well as N, N, N-trimethylammonium bromide (CTAB) and anionic surfactant sodium dodecyl sulfate (SDS) at 313.15K. With the system in two very narrow areas to form a double aqueous phase, the two-phase region is approximately equimolar lines as the center symmetry distribution, with the cationic surfactant carbon chain length increases, the cationic surfactant-rich aqueous phase Region to the cation and anion surfactant molar ratio decreased in the direction of a slight move.