Abstract

The scheme of temperature-dependent topologic transformations in water–oxyethylated nonylphenol–MgCl₂ phase diagrams was proved experimentally. An immiscibility area appears in the homogeneous area; it is bounded by a looped binodal curve and expands as temperature rises. The monotectic equilibrium area appears when the binodal curve touches the salt solubility line. The increasing neonol oxyethylation leads to an increase in temperature at which the immiscibility area appears and in monotectic temperature, due to the increasing hydration of surfactant micelles. The elucidated trends and studied phase diagrams can serve to purposefully select components and optimize process parameters of extraction involving oxyethylated surfactants.

中文翻译：

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水-氧乙基化壬基酚-MgCl 2体系的相图的温度诱导转变

摘要

实验证明了水-氧乙基化壬基苯酚-MgCl ₂相图中与温度有关的拓扑转换方案。不相溶的区域出现在均匀的区域中。它由一条成圈的双曲线曲线定界，并随着温度的升高而扩展。当双曲线曲线接触盐溶解度线时，出现单晶平衡区域。由于表面活性剂胶束的水合作用增加，新的酚新乙基氧基乙基化作用增加导致不溶混区域出现的温度和单晶温度的增加。阐明的趋势和研究的相图可用于有目的地选择组分，并优化涉及羟乙基化表面活性剂的萃取工艺参数。