{"title":"Influence of Antidepressant Drug on the Conductivity of Cationic Surfactant","authors":"N. A. Malik, U. Farooq, A. Malik, M. A. Rather","doi":"10.1134/S1061933X22600555","DOIUrl":null,"url":null,"abstract":"<p>In this study, the electrical conductivity of the antidepressant drug—nortriptyline hydrochloride and conventional surfactant—cetyldimethylethylammoniumbromide are investigated. The experimental critical micelle concentration and related thermodynamic parameters, such as Gibbs free energy, enthalpy, entropy change, as well as and excess change in Gibbs free energy are calculated using standard equations. The values of change in Gibbs free energy for the mixed nortriptyline hydrochloride with cetyldimethylethylammoniumbromide are found to be more negative further suggesting the mixed micellization to be favourable. However, the high values of change in entropy are observed owing to the charge on the head groups which are being partially neutralized by the counter ions upon micelle formation.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":"85 5","pages":"846 - 853"},"PeriodicalIF":1.6000,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloid Journal","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S1061933X22600555","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, the electrical conductivity of the antidepressant drug—nortriptyline hydrochloride and conventional surfactant—cetyldimethylethylammoniumbromide are investigated. The experimental critical micelle concentration and related thermodynamic parameters, such as Gibbs free energy, enthalpy, entropy change, as well as and excess change in Gibbs free energy are calculated using standard equations. The values of change in Gibbs free energy for the mixed nortriptyline hydrochloride with cetyldimethylethylammoniumbromide are found to be more negative further suggesting the mixed micellization to be favourable. However, the high values of change in entropy are observed owing to the charge on the head groups which are being partially neutralized by the counter ions upon micelle formation.
期刊介绍：
Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.
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