THE KRAFFT POINT OF DODECYLAMMONIUM CHLORIDE - PH EFFECT

被引：33

作者：

DAI, Q ^{[1
]}

LASKOWSKI, JS ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,DEPT MINING & MINERAL PROC ENGN,VANCOUVER V6T 1W5,BC,CANADA

来源：

LANGMUIR | 1991年 / 7卷 / 07期

关键词：

D O I：

10.1021/la00055a012

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Krafft point of dodecylammonium chloride was studied as a function of pH. Because of dynamic effects, the maximum bubble pressure method was found to be the only experimental technique that could be utilized to study the surface tension of dodecylammonium chloride solutions at various pH values. Both the solubility and the critical micelle concentration decrease with pH, but most importantly, the concentration range over which micelles can form narrows sharply when pH increases and disappears entirely at pH 10. The Krafft point of dodecylammonium chloride at pH 5 is 17.5-degrees-C and decreases to 7-degrees-C when pH is increased up to 9.

引用

页码：1361 / 1364

页数：4

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