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Keywords = oleyl-based sulfosuccinates

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16 pages, 2637 KB  
Article
Polyoxyethylene Group-Dependent Surface Properties and Aggregation Behavior in Oleyl-Based Sulfosuccinate Systems
by Ping Li, Zhengwei Zhang, Jie Chai, Yuan Liu, Siqi Han and Peixin Bai
Molecules 2025, 30(11), 2321; https://doi.org/10.3390/molecules30112321 - 26 May 2025
Cited by 1 | Viewed by 1161
Abstract
Three oleyl-based sulfosuccinates with different polyoxyethylene (EO) chain length (MS-OEn, where n = 3, 5, 7) were synthesized, and their structure were confirmed using FT-IR and ¹H NMR analyses. The surfactant’s adsorption properties, aggregation behavior and practical performance were systematically investigated. [...] Read more.
Three oleyl-based sulfosuccinates with different polyoxyethylene (EO) chain length (MS-OEn, where n = 3, 5, 7) were synthesized, and their structure were confirmed using FT-IR and ¹H NMR analyses. The surfactant’s adsorption properties, aggregation behavior and practical performance were systematically investigated. Equilibrium surface tension measurements elucidated the surface adsorption properties such as critical micelle concentration (cmc) values and the corresponding surface tensions at cmc (γcmc). Dynamic surface tension analysis indicated slower adsorption kinetics for surfactants with longer EO chains. Aggregation studies demonstrated that MS-OE3 formed vesicles, whereas no such vesicular structures were observed in the aqueous solutions of MS-OE5 and MS-OE7 at equivalent concentrations. Further, it was observed that foam stability decreased with an increase in EO units, while MS-OE3 exhibited the best wetting ability. Notably, the liquid crystal emulsion formulated with MS-OE7 demonstrated exceptional long-term stability. Full article
(This article belongs to the Section Materials Chemistry)
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