物理化学学报 >> 1991, Vol. 7 >> Issue (03): 345-348.doi: 10.3866/PKU.WHXB19910317

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表面活性剂与金属离子的相互作用

李学刚; 赵国玺   

  1. 北京大学化学系,北京 100871
  • 收稿日期:1990-02-22 修回日期:1990-06-11 发布日期:1991-06-15
  • 通讯作者: 李学刚

Interactions of Surfactants with Metallic Cations

Li Xue-Gang; Zhao Guo-Xi   

  1. Chemistry Department, Peking University, Beijing 100871
  • Received:1990-02-22 Revised:1990-06-11 Published:1991-06-15
  • Contact: Li Xue-Gang

关键词: 表面活性剂, 烷基聚氧乙烯醚硫酸盐, 金属离子-表面活性剂相互作用

Abstract: The concentration (c)-voltage (V) relations of K~+ and Ca~(2+) in surfactant solutions have been measured by ionic selective electrodes. The results show that it is very easy to form ion-pair, for alkyl sulfate(RS)and metallic cations which is the reason why the eletrolyte tolerance of RS is very low; The situation between the polyoxyethylene group in alkylpolyox yethylene ether sulfate salts (RE_nS) and multivalent metallic cations (Mn~(n+)) may be considered as the interaction performed by complexation, which prevents RE_nS and M~(n+) to form ion-pair, and this is one of the reasons why RE_nS have a higher eletrolyte tolerance.

Key words: Surfactant, Alkylpolyoxyethylene ether sulfate, Metallic ionsurfactant interaction