The Effect of Added Alcohols on the Solubility and the Krafft Point of Sodium Dodecyl Sulfate
The Effect of Added Alcohols on the Solubility and the Krafft Point of Sodium Dodecyl Sulfate
复制标题
添加醇对十二烷基硫酸钠溶解度和克拉夫特点的影响
DOI：
10.1021/j100883a022
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发表时间：
1966
期刊：
影响因子：
--
通讯作者：
E. Hutchinson
中科院分区：
文献类型：
--
作者：
H. Nakayama;K. Shinoda;E. Hutchinson
测定了十二烷基硫酸钠在含有少量正己醇、正庚醇和正辛醇的水中的溶解度随温度的变化。少量这些醇的加入引起了溶解度的增加，这是因为有效地降低了克拉夫特点。用表面活性剂与醇形成混合胶束降低水合固体剂熔点的模型，定量地解释了添加乙醇引起的Krafft点降低，正如添加溶质降低了溶剂的凝固点一样。可以计算出控制离子表面活性剂的克拉夫特点所需的醇量。
The solubility of sodium dodecyl sulfate in water in the presence of a small amount of hexanol, heptanol, and octanol has been measured as a function of temperature. The solubility increase caused by the addition of a small amount of these alcohols was remark-able due tothe effective depression of the Krafft point. The Krafft point depression caused by added alcohol is explained quantitatively by a model in which it is proposed that the meltingpoint of hydrated solid agent is depressed owing to the formation of a mixed micelle of surfactant and alcohol, just as the freezing point of a solvent is depressed by added solute. It is possible to calculate the amount of alcohol required to control the Krafft point of ionic surfactants.