物理化学学报 >> 1993, Vol. 9 >> Issue (04): 478-483.doi: 10.3866/PKU.WHXB19930411

研究论文 上一篇    下一篇

无机盐对正负表面活性剂混合体系性质的影响

张兰辉; 谯静; 丁慧君; 赵国玺   

  1. 北京大学物理化学研究所,北京 100871
  • 收稿日期:1992-02-11 修回日期:1992-05-28 发布日期:1993-08-15
  • 通讯作者: 张兰辉

The Effect of Inorganic Electrolytes on the Mixed Micelles Formation of Anioniccationic Surfactants

Zhang Lan-Hui; Qiao Jing; Ding Hui-Jun; Zhao Guo-Xi   

  1. The Institute of Physical Chemistry, Peking University, Beijing 100871
  • Received:1992-02-11 Revised:1992-05-28 Published:1993-08-15
  • Contact: Zhang Lan-Jing

摘要: 用滴体积法测定了四种离子强度下(μ=0.02, 0.05, 0.1, 0.2 mol·kg~(-1), 支持电解质为NaBr)C_(12)H_(25)SO_4Na/C_6H_(13)(NC_5H_5)Br混合体系在五种比例(10:1, 3:1, 1:1, 1:3, 1:10)时的临界胶团活度cma(25 ℃). 提出了无机盐对正负表面活性剂混合体系临界胶团活度的影响程度的计算式.

关键词: 表面活性, 临界胶团活度, 反离子结合度, 表面活性剂

Abstract: The critical micelle activities (cma) of the mixed systems of sodium dodecylsul-fate-hexylpyridinehydrobromate have been determined by the drop-volume method under different ionic strengths (25 ℃). A formula to estimate the effect of inorganic salt electrolyte on the cma has been proposed.

Key words: Surface activity, Critical micelle activity, Counterion bonding degree, Surfactant