大学化学 >> 2015, Vol. 30 >> Issue (1): 41-44.doi: 10.3866/PKU.DXHX20150108

知识介绍 上一篇    下一篇

亲水头基大小对正负离子表面活性剂混合体系的影响

卡哈尔   

  1. 新疆农业职业技术学院 新疆昌吉 831100
  • 发布日期:2015-02-25

Effect of the Hydrophilic Head Group Size of Surfactant on the Mixed Systems of Oppositely Charged Surfactants

Kahaer   

  1. Xinjiang Agricultural Vocational College, Changji 831100, Xinjiang, China
  • Published:2015-02-25

PDF

1514

赞

摘要：

正负离子表面活性剂混合体系曾被认为是表面活性剂配方的禁忌,但通过增大表面活性剂头基的面积,正负混合体系在很宽的物质的量比下都不会产生沉淀,而且还会产生显著的增效效应。头基大的离子型表面活性剂甚至能够用来增溶难溶的反电荷表面活性剂。

关键词: 亲水头基, 表面活性剂, 正负离子混合体系, 静电作用

Abstract:

The mixed systems of a cationic and an anionic surfactant have been suggested to be avoided since they were prone to forming precipitates. However, increasing the head group size of the surfactants, the mixed systems would not form precipitates in a large mixing ratio, and strong synergetic effect can be produced. The surfactant with large head group may even be able to increase the water solubility of an oppositely charged surfactant.

Key words: Hydrophilic head group, Surfactant, Positive and negative mixing system, Electrostatic interaction