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首页> 外文期刊>Journal of Surfactants and Detergents >Synthesis and Thermodynamic Properties of Rosin-Based Cationic Gemini Surfactants
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Synthesis and Thermodynamic Properties of Rosin-Based Cationic Gemini Surfactants

机译：松香基阳离子双子表面活性剂的合成及热力学性质

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摘要

A series of rosin-based cationic gemini surfactants with different spacer length (n = 2, 3, 4) were synthesized and characterized. Surface activity and micel-lization parameters including the critical micelle concentration, the degree of counterion dissociation, and thermodynamic functions of micellization in aqueous solutions have been investigated. Free energy perturbation was performed to study the enthalpy-entropy compensation of the synthesized gemini surfactants in aqueous solutions. The experimental results showed that the micellization of rosin-based gemini surfactants in aqueous solutions is a spontaneous and entropy-driven process. The micellization process was found to follow the entropy-enthalpy compensation phenomenon.
机译：合成并表征了一系列具有不同间隔长度（n = 2、3、4）的松香基阳离子双子表面活性剂。研究了表面活性和胶束化参数，包括临界胶束浓度，抗衡离子的解离度和水溶液中胶束的热力学功能。进行自由能摄动，以研究合成双子表面活性剂在水溶液中的焓-熵补偿。实验结果表明，松香基双子表面活性剂在水溶液中的胶束化是自发和熵驱动的过程。发现胶束化过程遵循熵-焓补偿现象。

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