Iterative evaluation of micellar and thermodynamic properties of 12-2-12 in 1 % BSA aqueous solution in the presence of organic solvents and temperature

IF 1.2 4区工程技术 Q4 CHEMISTRY, APPLIED

Tenside Surfactants Detergents Pub Date : 2023-11-29 DOI:10.1515/tsd-2023-2540

Ashwani Kumar Sood, Sachin Kumar Godara, Meenu Aggarwal

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Abstract

The interactions between a gemini surfactant 12-2-12 and bovine serum albumin (BSA) have been studied in aqueous and mixed aqueous media by conductance measurements using the iterative method at different temperatures ranging from 298.15 K to 313.15 K with step size 5. The critical micellar concentration (CMC) as well as the degree of ionization for the micelles (α) have been evaluated and their variation with solvent type and temperature has been discussed. The error for conductivity measurements was calculated and found to be much smaller than for surface tension measurements using the platinum ring method. The CMC values for the mixture of 12-2-12 and BSA in aqueous solvent solutions follow the sequence: DMF > AN > DMSO > water. These values were further confirmed by surface tension studies. From the thermodynamic parameters, hydrophobic interactions were found to be the driving force for micellization. The existence of enthalpy-entropy compensation was established from the linear plot of ΔH° m and ΔS° m .

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在有机溶剂和温度存在下，对12-2-12在1% BSA水溶液中的胶束和热力学性质进行了迭代评价

在298.15 ~ 313.15 K的不同温度下，用迭代法研究了gemini表面活性剂12-2-12与牛血清白蛋白(BSA)在水和混合水介质中的相互作用。测定了胶束(α)的临界胶束浓度(CMC)和电离度，并讨论了它们随溶剂类型和温度的变化规律。计算了电导率测量的误差，发现比使用铂环法测量表面张力的误差要小得多。12-2-12与BSA混合物在水溶液中的CMC值依次为:DMF >一个比;DMSO祝辞水。表面张力研究进一步证实了这些值。从热力学参数来看，疏水相互作用是胶束化的驱动力。通过ΔH°m和ΔS°m的线性图确定了焓熵补偿的存在性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tenside Surfactants Detergents 工程技术-工程：化工

CiteScore

1.90

自引率

10.00%

发文量

审稿时长

3.8 months

期刊介绍： Tenside Surfactants Detergents offers the most recent results of research and development in all fields of surfactant chemistry, such as: synthesis, analysis, physicochemical properties, new types of surfactants, progress in production processes, application-related problems and environmental behavior. Since 1964 Tenside Surfactants Detergents offers strictly peer-reviewed, high-quality articles by renowned specialists around the world.