The micellization properties of mixed aqueous solutions of a cationic gemini surfactant (CGS) and Triton X‐100, a conventional non‐ionic surfactant, with various mole fractions, were determined by measuring the surface tension at different temperatures. Various theoretical models were used to analyze the behavior of this mixed system. The interactions between CGS and Triton X‐100 were determined to be non‐ideal and synergistic. The calculated interaction parameters (βM) have negative values at all temperatures and for all mole fractions, showing attractive interactions. It was found that increasing the mole fraction of Triton X‐100 significantly increased the synergistic effect (more negative values). Micellar aggregation number (Nagg) values of pure surfactants and their mixtures in different ratios were obtained with the steady‐state fluorescence quenching method. Furthermore, the molar solubilization ratio of Sudan III organic dye in all surfactants aqueous systems was obtained using UV–Visible spectrophotometry. At concentrations above critical micelle concentration, the solubility of Sudan III in water was substantially increased linearly for all systems and it was observed that the enhancement was even more significant for mixed surfactant systems.

中文翻译：

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阳离子双子表面活性剂与非离子表面活性剂混合溶液的胶束化、聚集、相互作用和增溶行为

通过测量不同温度下的表面张力，确定了不同摩尔分数的阳离子双子表面活性剂（CGS）和传统非离子表面活性剂 Triton X-100 的混合水溶液的胶束化特性。使用各种理论模型来分析该混合系统的行为。 CGS 和 Triton X-100 之间的相互作用被确定为非理想且具有协同作用。计算出的交互参数（β中号）在所有温度和所有摩尔分数下都具有负值，显示出有吸引力的相互作用。结果发现，增加 Triton X-100 的摩尔分数可显着增加协同效应（更多负值）。胶束聚集数（氮聚合）通过稳态荧光猝灭方法获得了纯表面活性剂及其不同比例的混合物的值。此外，使用紫外-可见分光光度法获得了苏丹 III 有机染料在所有表面活性剂水体系中的摩尔增溶比。在高于临界胶束浓度的浓度下，所有系统中苏丹III在水中的溶解度均显着线性增加，并且观察到对于混合表面活性剂系统，这种增强更为显着。