DILUTE PHASE-BEHAVIOR OF CETYL ALCOHOL, SODIUM LAURYL SULFATE, AND WATER

被引：25

作者：

GOETZ, RJ ^{[1
]}

ELAASSER, MS ^{[1
]}

机构：

[1] LEHIGH UNIV,CTR POLYMER SCI & ENGN,INST EMULS POLYMERS,DEPT CHEM ENGN,111 RES DR BLDG A,BETHLEHEM,PA 18015

来源：

LANGMUIR | 1990年 / 6卷 / 01期

关键词：

Alcohols - Colloids - Micelles - Gels - Structure - Solutions - Phase Diagrams - Surface Active Agents - Solutions;

D O I：

10.1021/la00091a020

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A ternary phase diagram of cetyl alcohol (CA), sodium lauryl sulfate (SLS), and water is constructed at room temperature in the dilute corner with a composition range of 96-100 wt % water, and 4-0 wt % of the surfactant and alcohol. Thephase behavior is examined though differential scanning calorimetry and associated with the polymorphism of CA. Three different phases are observed: (i) a gel phase, (ii) a coagel phase, and (iii) a micellar solution of SLS and crystals of CA. With aging, certain regions of the gel transform into the coagel phase. This transformation and the existence of the micelle + & crystal region are related to the collapse of the bilayer structure of the gel. © 1990, American Chemical Society. All rights reserved.

引用

页码：132 / 136

页数：5

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