Critical micelle concentration and partition coefficient of mixed micelles: Analysis of ternary systems based on Markov chain model and simple mixture model
Critical micelle concentration and partition coefficient of mixed micelles: Analysis of ternary systems based on Markov chain model and simple mixture model
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DOI：
10.1016/j.molliq.2023.121383
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发表时间：
2023-02-11
影响因子：
6
通讯作者：
Komichi, Yuta
中科院分区：
文献类型：
--
作者：
Suzuki, Nozomu;Taura, Daisuke;Komichi, Yuta
当两种或两种以上表面活性剂混合时，与溶液中的单一表面活性剂体系相比，混合体系表现出更好的性能。马尔可夫链模型可以对混合胶束的临界胶束浓度（CMC）进行分析，得到的结果与简单的混合模型类似，通常被称为“正则解理论”。本研究验证了两个假设：(1)三元体系的马尔可夫链模型可以通过将表面活性剂i和j的缔合常数近似为Kij = Kji来简化；(2)准简单三元混合模型，即类似于马尔可夫链模型的简单混合模型，有助于解释描述二元混合胶束配分系数的简单混合模型的相互作用参数。通过假设Kij = Kji，推导了三元体系的马尔可夫链模型和简单混合模型的相互作用参数方程，该模型可以描述二元混合胶束的配分系数。将模型与实验数据进行了比较，推导出的方程较好地描述了CMC和分区系数的数据。(c) 2023 Elsevier B.V.版权所有
When two or more surfactants are mixed, the mixed system exhibits improved performance compared with a single surfactant system in solution. The Markov chain model can analyze the critical micelle con-centration (CMC) of mixed micelles, yielding results similar to those of a simple mixture model, which is typically referred to as the "regular solution theory". In this study, two hypotheses were tested: (1) the Markov chain model for ternary systems can be simplified by approximating the association constant of surfactants i and j as Kij = Kji and (2) the quasi-simple ternary mixture model, that is, a simple mixture model analogous to the Markov chain model, helps interpret the interaction parameter of the simple mix-ture model that can describe the partition coefficient of the binary mixed micelle. Equations were derived for (1) the Markov chain model for ternary systems by assuming Kij = Kji and (2) the interaction parameter of the simple mixture model that can describe the partition coefficient of the binary mixed micelle. The models were compared with the experiment data, and the derived equations described the data of the CMC and partition coefficient well.(c) 2023 Elsevier B.V. All rights reserved.