The physical and chemical properties of sodium lauryl glutamate were systematically investigated in this work. To determine the critical micelle concentration (CMC) of sodium lauryl glutamate, the surface tension was measured using the Wilhelmy plate method. The Krafft point was determined using the ultraviolet/visible spectrophotometer. The effect of pH on the solute in the solution was studied using potentiometric titration. The critical packing parameter (CPP) and Gibbs free energy (ΔG) of micelle formation were calculated using the corresponding parameters. The temperature-concentration phase diagram of sodium lauryl glutamate was constructed using the dynamic light scattering system (DLS) and polarised optical microscopy (POM). The calculated theoretical data were combined with the actual observed data from the phase diagram. Finally, the phase behaviour of sodium lauryl glutamate was determined.

中文翻译：

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月桂基谷氨酸钠的相行为：温度和浓度的影响

本文系统地研究了月桂基谷氨酸钠的理化性质。为了确定月桂基谷氨酸钠的临界胶束浓度 (CMC)，使用 Wilhelmy 平板法测量表面张力。使用紫外/可见分光光度计测定克拉夫特点。使用电位滴定法研究了 pH 值对溶液中溶质的影响。使用相应的参数计算胶束形成的临界堆积参数（CPP）和吉布斯自由能（ΔG）。使用动态光散射系统（DLS）和偏光显微镜（POM）构建了月桂基谷氨酸钠的温度-浓度相图。计算的理论数据与相图中的实际观察数据相结合。最后，