Synthesis, characterization, biodegradation, and evaluation of the surface‐active properties of non‐ionic gemini surfactants derived from lauryl diethanolamide DOI

Gerónimo Tognotti,

Carolina G. Gutierrez, Marcelo C. Murguía

et al.

Journal of Surfactants and Detergents, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract The surface activities and application properties of aqueous solution surfactants are greatly influenced by their structure, especially the spacer group that connects polar head groups. Herein, four new non‐ionic Gemini with different spacers were designed synthesized, surfactant biodegradability studied. synthesis these compounds involves a two‐step procedure. first step is formation an amide from lauric acid diethanolamine. second reaction lauryl diethanolamide spacers, latter being flexible‐hydrophilic, rigid‐hydrophobic in respectively. Their structures characterized using 1 H NMR, 13 C FT‐IR, ESI‐MS. critical micelle concentration (CMC), tension at CMC (γ ), efficiency to reduce 20 mN/m ( p effectiveness (π maximum excess (Γ max minimum area A min ) measured 20, 40, 50°C. molecular architecture strongly influences thermodynamic parameters, such as standard change for Gibbs free energy adsorption (Δ G° ads micellization mic ). ability particularly good, but distinguishing characteristic high relative propensity form micellar aggregates. This aggregation improves hydrophilicity flexibility increase. Finally, less than 30 days, all determined be 99% biodegradable river water.

Language: Английский

Physicochemical Characterization and Asymmetric Catalytic Properties of New Biobased Organocatalytic Surfactants DOI Creative Commons
Elliot Calbrix, Pascale de, Sophie Thiébaud‐Roux

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(2), P. 216 - 216

Published: Jan. 7, 2025

In organic synthesis, the solvent is chemical compound that represents largest proportion of process. However, conventional solvents are often toxic and dangerous for environment, an interesting alternative to replace them by water. this context, catalyst surfactants allow both reagents in water be solubilized reactions catalyzed. This article describes synthesis new biobased organocatalytic soluble water, composed a hydrocarbon chain grafted onto imidazolidinone moiety. The moiety acts as catalyst, but also polar head surfactant, while fatty constitutes hydrophobic tail. five steps were optimized, respecting principles green chemistry, two obtained with good selectivity. Surface properties aqueous medium then evaluated use tensiometric analysis. Their molecular organization vesicles was characterized Dynamic Light Scattering. presence allows carried out organized medium. Model catalytic performed validated feasibility replacing hazardous solvents. newly synthesized showed satisfactory activity allowed expected products enantioselectivity.

Language: Английский

Citations

0
Application and Synthesis of Gemini Surfactant in Heavy Oil Development DOI Creative Commons
Peng Liu, Xianghong Li, Hua Li

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(9), P. 8832 - 8842

Published: Feb. 27, 2025

Gemini surfactants have many potential applications in the viscosity reduction of heavy oils due to their unique structure, which appears consist two single-chain surfactant molecules. This paper introduces mechanism gemini and research progress four types used at home abroad. The study found that formation water containing calcium magnesium ions with a salinity more than 30000 mg/L, added amount anionic was 0.4–0.5%, rate could reach 90%, ultralow interfacial tension (10–3 orders magnitude) achieved. Based on above advantages, synthesis physicochemical properties are summarized. Finally, difficulties synthesizing summarized, future development trend is given.

Language: Английский

Citations

0
Nonionic Gemini Surfactants With Outstanding Surface Activity and Wetting Properties DOI
Zhen Wu, Yaqi Li,

Youmei Xing

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

ABSTRACT Nonionic surfactants with excellent surface tension reduction and wetting properties have great potential in semiconductor development industrial cleaning applications. In this study, we synthesized three nonionic gemini surfactants, designated as NGS1 ( n = 4), NGS2 7), NGS3 11), varying lengths of polyoxyethylene chains. The critical micelle concentrations (CMC) NGS1, NGS2, are determined to be 0.775, 0.852, 0.889 mmol/L, respectively. Correspondingly, their tensions at the CMC γ ) found 30.04, 31.15, 32.07 mN/m. low values exhibit more remarkable capabilities compared commercial (Tween‐80 Brij‐35), demonstrating outstanding activity. Moreover, contact angles solutions undergo substantial reductions, achieving 53°, 58°, 62° on polytetrafluoroethylene, respectively, indicating much better than Tween‐80 (76°) Brij‐35 (83°). Our study gains insight into relationship between molecular structures properties, motivating researchers develop advanced for development.

Language: Английский

Citations

0
Low-Foaming Nonionic Gemini Surfactants Containing Hydrophilic Poly(oxyethylene) Chain and Hydrophobic Di-tert-pentylbenzenes Groups DOI
Zhen Wu,

Jiewen Ma,

Zhijun Zhang

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(42), P. 22222 - 22229

Published: Oct. 10, 2024

Low-foaming nonionic gemini surfactants have a wide range of applications in industrial cleaning and photoresist development. In this study, three low-foaming (S1, S2, S3) with different poly(oxyethylene) chain lengths been synthesized by using methoxy poly(ethylene glycol) 2,5-di-tert-pentylhydroquinone. The chemical structures the novel are confirmed 1H NMR, Fourier transform infrared, gel permeation chromatography (GPC), their properties such as surface tension, wetting properties, emulsifying foaming investigated. tension values S1, S3 at critical micelle concentration 40.29, 37.14, 41.64 mN/m, exhibiting good activity. When surfactant is higher than 2 mM, contact angles S1 S2 no longer change can maintain 62 64°, showing properties. addition, keep an emulsion state for months high concentrations, stability. Furthermore, all prepared show initial volumes very low, less 0.1 mL various 2% conventional sodium dodecyl sulfate. For 0.1, 1, 2, 3 g/L 0.5, 0.55, 0.45 mL, respectively. S3, general trend increasing concentration. chains possess more same concentration, which because greater cohesion between molecules increase elasticity bubble film. Our study enriches design rationales motivates researchers to develop advanced

Language: Английский

Citations

2
Synthesis, Surface Activity, Emulsifiability and Bactericidal Performance of Zwitterionic Tetrameric Surfactants DOI Creative Commons

Xin Wei,

Jie Li,

Xiangfei Geng

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(18), P. 4286 - 4286

Published: Sept. 10, 2024

In this paper, a series of tetrameric surfactants (4C

Language: Английский

Citations

0
Synthesis, characterization, biodegradation, and evaluation of the surface‐active properties of non‐ionic gemini surfactants derived from lauryl diethanolamide DOI

Gerónimo Tognotti,

Carolina G. Gutierrez, Marcelo C. Murguía

et al.

Journal of Surfactants and Detergents, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract The surface activities and application properties of aqueous solution surfactants are greatly influenced by their structure, especially the spacer group that connects polar head groups. Herein, four new non‐ionic Gemini with different spacers were designed synthesized, surfactant biodegradability studied. synthesis these compounds involves a two‐step procedure. first step is formation an amide from lauric acid diethanolamine. second reaction lauryl diethanolamide spacers, latter being flexible‐hydrophilic, rigid‐hydrophobic in respectively. Their structures characterized using 1 H NMR, 13 C FT‐IR, ESI‐MS. critical micelle concentration (CMC), tension at CMC (γ ), efficiency to reduce 20 mN/m ( p effectiveness (π maximum excess (Γ max minimum area A min ) measured 20, 40, 50°C. molecular architecture strongly influences thermodynamic parameters, such as standard change for Gibbs free energy adsorption (Δ G° ads micellization mic ). ability particularly good, but distinguishing characteristic high relative propensity form micellar aggregates. This aggregation improves hydrophilicity flexibility increase. Finally, less than 30 days, all determined be 99% biodegradable river water.

Language: Английский

Citations

0