{"title":"Effect of Anionic Surfactant Additives on the Surface Characteristics of Solutions of Dicationic Diimidazolium Surfactants with Short Spacer Fragments","authors":"S. L. Khil’ko, A. A. Kotenko","doi":"10.1134/S1061933X2560099X","DOIUrl":null,"url":null,"abstract":"<p>Tensiometric and dilatational rheological characteristics of mixed solutions of dicationic diimidazolium surfactants with extremely short spacer fragments and anionic surfactants (sodium dodecyl sulfate, sulfonol, sodium 3-laureth sulfate) at the interface with air have been studied by the pendant drop shape and oscillating pendant drop methods. The character of the interaction between the dicationic and anionic surfactants depends on the structure of anionic surfactant molecules. It has been shown that strong complexes with a component ratio close to 1 : 1 can be formed between the dicationic surfactant containing four methylene groups in the spacer fragment and sodium dodecyl sulfate. It has been found that the resulting complexes are stable in the neutral and weakly acidic pH regions.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":"87 5","pages":"684 - 693"},"PeriodicalIF":1.1000,"publicationDate":"2025-09-09","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/S1061933X2560099X","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
Tensiometric and dilatational rheological characteristics of mixed solutions of dicationic diimidazolium surfactants with extremely short spacer fragments and anionic surfactants (sodium dodecyl sulfate, sulfonol, sodium 3-laureth sulfate) at the interface with air have been studied by the pendant drop shape and oscillating pendant drop methods. The character of the interaction between the dicationic and anionic surfactants depends on the structure of anionic surfactant molecules. It has been shown that strong complexes with a component ratio close to 1 : 1 can be formed between the dicationic surfactant containing four methylene groups in the spacer fragment and sodium dodecyl sulfate. It has been found that the resulting complexes are stable in the neutral and weakly acidic pH regions.
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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