Influence of salts on behavior of cationic and anionic surfactant aqueous mixture

WANG Shihu; SHAO Hongyun; SUN Meijuan; YAO Jun; TENG Hongni

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Influence of salts on behavior of cationic and anionic surfactant aqueous mixture

更新时间：2025-12-10

- Influence of salts on behavior of cationic and anionic surfactant aqueous mixture
- CIESC Journal Issue 6, Pages: 1395-1398(2006)
- 作者机构：
  
  1. 中国石油大学（华东）石油工程学院,山东,东营,257061
  2. 中国石化胜利油田公司采油工艺研究院,山东,东营,257000
  3. 青岛科技大学化学与分子工程学院,山东,青岛,266042
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 2006，
  
  Published：25 June 2006
- 稿件说明：
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WANG Shihu, SHAO Hongyun, SUN Meijuan, et al. Influence of salts on behavior of cationic and anionic surfactant aqueous mixture[J]. CIESC Journal, 2006, (6): 1395-1398.
DOI：

WANG Shihu, SHAO Hongyun, SUN Meijuan, et al. Influence of salts on behavior of cationic and anionic surfactant aqueous mixture[J]. CIESC Journal, 2006, (6): 1395-1398. DOI：

摘要

以阴阳离子表面活性剂混合体系为研究对象，通过测定体系在不同种类盐溶液中的三元相行为，探索了盐对体系相行为中的双水相区位置及相区宽度的影响规律.研究发现，阴离子双水相区的位置与宽度主要受盐阳离子的影响，盐阳离子半径越大，极化率越高，阴离子双水相区向阴离子表面活性剂方向移动的趋势越大，相区越宽;而盐的阴离子是影响阳离子双水相区位置与宽度的主要因素.

Abstract

Aqueous two-phase system (ATPS) can be formed in the mixture of cationic and anionic surfactants solution.In the pseudo ternary phase diagram of SDS/CTAB/H2O/salt

there are two ATPS regions.The one

in which the content of anionic surfactant is more than cationic surfactant

is called ATPSa; the other one

on the contrary

is called ATPSc.The position and width of ATPSa and ATPSc are influenced by salt

which is added in the system.The cation of salt mainly affect ATPSa.The larger the radius of salt cation

the nearer the ATPSa moves to the anionic surfactant

and the larger the ATPSa width.The anion of salt is the main factor affecting ATPSc.

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