Aggregation Behavior of Sodium Dioctylsulfosuccinate in Aqueous Ethylene Glycol Medium. A Case of Hydrogen Bonding between Surfactant and Solvent and Its Manifestation in the Surface Tension Isotherm

Das, Debesh K.; Dey, Jahar; Chandra, Asit K.; Thapa, Uttam; Ismail, K.

doi:10.1021/la302876z

Cited by 42 publications

(28 citation statements)

References 34 publications

(70 reference statements)

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“…The optimized geometries indicated an interaction energy of −31.8 kcal/mol for the HPMC-AOT system, driven by the strong interaction between the AOT sulfonate group (ion) and the HPMC hydroxyl group (dipole) and the hydrogen bond between the AOT carbonyl group and the HPMC hydroxyl group, as depicted in Figure 7a. Favorable interactions (−37.93 kcal/mol) were also predicted by DFT calculations for the AOT-water-ethylene glycol system [34]. In the case of the HPMC-Kolliphor ® EL system, the calculated interaction energy was −7.91 kcal/mol.…”

Section: Compressive Modulus (Kpa)mentioning

confidence: 55%

Tuning the Mechanical and Thermal Properties of Hydroxypropyl Methylcellulose Cryogels with the Aid of Surfactants

Dezotti

Furtado

Yee

et al. 2021

Gels

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The mechanical and thermal properties of cryogels depend on their microstructure. In this study, the microstructure of hydroxypropyl methylcellulose (HPMC) cryogels was modified by the addition of ionic (bis (2-ethylhexyl) sodium sulfosuccinate, AOT) and non-ionic (Kolliphor® EL) surfactants to the precursor hydrogels (30 g/L). The surfactant concentrations varied from 0.2 mmol/L to 3.0 mmol/L. All of the hydrogels presented viscous behavior (G″ > G′). Hydrogels containing AOT (c > 2.0 mmol/L) led to cryogels with the lowest compressive modulus (13 ± 1 kPa), the highest specific surface area (2.31 m2/g), the lowest thermal conductivity (0.030 W/(m·°C)), and less hygroscopic walls. The addition of Kolliphor® EL to the hydrogels yielded the stiffest cryogels (320 ± 32 kPa) with the lowest specific surface area (1.11 m2/g) and the highest thermal conductivity (0.055 W/(m·°C)). Density functional theory (DFT) calculations indicated an interaction energy of −31.8 kcal/mol due to the interaction between the AOT sulfonate group and the HPMC hydroxyl group and the hydrogen bond between the AOT carbonyl group and the HPMC hydroxyl group. The interaction energy between the HPMC hydroxyl group and the Kolliphor®EL hydroxyl group was calculated as −7.91 kcal/mol. A model was proposed to describe the effects of AOT or Kolliphor®EL on the microstructures and the mechanical/thermal properties of HPMC cryogels.

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Section: Compressive Modulus (Kpa)mentioning

confidence: 55%

Tuning the Mechanical and Thermal Properties of Hydroxypropyl Methylcellulose Cryogels with the Aid of Surfactants

Dezotti

Furtado

Yee

et al. 2021

Gels

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“…The properties of these systems depend on the used solvent. For instance, Das et al (2012) have reported that the cmc of AOT in EG is about 47 times that of the same surfactant in water. Durantini et al (2009) have shown that reverse micelles containing non-aqueous polar solvents such as EG and FA swell much more rapidly than those containing water.…”

Section: Introductionmentioning

confidence: 99%

Concentrated phases of an ionic surfactant (Aerosol OT) in polar solvents

Berrellez

Tánori

Acedo-Mendoza

et al. 2021

J Surfact & Detergents

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We have studied concentrated phases of Aerosol OT (AOT) in polar (water, ethylene glycol, formamide, N,N-dimethylformamide) and apolar (isooctane) solvents. We investigated two surfactant volume fractions (φ = 0.2 and φ = 0.6) with small angle x-ray scattering (SAXS), rheology and electrical conductivity experiments. AOT self-assembles differently depending on solvent type and concentration. SAXS experiments show that the AOT/water system displays a lamellar phase. In the other cases, only formamide displays a lamellar phase for φ = 0.6. The other solvents (and formamide at φ = 0.2) promote the self-assembly of AOT in other microstructures. The SAXS spectra display correlation peaks consistent with a disordered array of cylindrical aggregates. The microstructure of the AOT/isooctane system at φ = 0.2 is that of an arrangement of spherical aggregates. The results are explained in terms of surfactant packing models and solvent properties. For instance, the ability of ethylene glycol to form hydrogen bonds with AOT promotes the formation of cylindrical aggregates by increasing the area per surfactant polar head. As N,N-dimethylformamide is slightly miscible in hydrocarbons it increases the volume of the surfactant tail promoting reverse structures.

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“…In aqueous solution, surfactants can assemble into various kinds of aggregates, such as spherical micelles, ellipsoidal-like micelles, worm-like micelles, and vesicles, and so on (Das et al, 2012;Fang et al, 2017;Yu et al, 2012). The conformations of these highly ordered aggregates are closely related to their wide-ranging applications in many fields.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Surface Properties, and Antibacterial Activity of Novel Ester‐Containing Cationic Silicone Surfactants and Their Utilization as Fabric‐Finishing Agents

Wei

Cheng

Zhang

et al. 2018

J Surfact & Detergents

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In this study, a series of cationic silicone surfactants SiQC n Cl containing ester groups and double longchain alkyls (n = 9, 11, 13, 15, and 17) were synthesized by microwave irradiation and characterized using infrared Fourier transform (FTIR), 1 H nuclear magnetic resonance ( 1 H NMR), and thermogravimetric analysis (TGA). Surface activity and adsorption of these surfactants were investigated by measuring the equilibrium surface tension. The critical micelle concentration (CMC) decreased with increasing alkyl length of SiQC n Cl at 25 C and so did the corresponding surface tension at the CMC (γ CMC ). The aggregation behavior in aqueous solutions was also investigated systemically through transmission electron microscopy (TEM) and dynamic light scattering (DLS). Spherical or ellipsoidal-like aggregates with diameters ranging from 300 to 900 nm were observed. It is also shown that the cationic silicone surfactants exhibit certain antibacterial properties against Staphylococcus aureus but slightly poor to Escherichia coli. The morphological structure of SiQC 15 Cl-treated cotton fabrics was observed using scanning electron microscopy (SEM), which showed that the surface became neat and smooth. What is more, the finished cotton fabrics maintained some antibacterial properties with improved softness, which may provide a more comfortable and healthy lifestyle. This work may also be helpful to the design and application of functional cationic silicone surfactants. Keywords Cationic silicone surfactants Á Ester bonds Á Aggregation behavior Á Performance test Á Fabric finishing J Surfact Deterg (2019) 22: 285-299. The morphologies of the aggregates for SiQC n Cl in aqueous solutions (10 mmol L −1 ) were examined via a JSM-7001F TEM (JEOL, Japan) at 20 kV. The samples were 286 J Surfact Deterg J Surfact Deterg (2019) 22: 285-299

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Aggregation Behavior of Sodium Dioctylsulfosuccinate in Aqueous Ethylene Glycol Medium. A Case of Hydrogen Bonding between Surfactant and Solvent and Its Manifestation in the Surface Tension Isotherm

Cited by 42 publications

References 34 publications

Tuning the Mechanical and Thermal Properties of Hydroxypropyl Methylcellulose Cryogels with the Aid of Surfactants

Tuning the Mechanical and Thermal Properties of Hydroxypropyl Methylcellulose Cryogels with the Aid of Surfactants

Concentrated phases of an ionic surfactant (Aerosol OT) in polar solvents

Synthesis, Surface Properties, and Antibacterial Activity of Novel Ester‐Containing Cationic Silicone Surfactants and Their Utilization as Fabric‐Finishing Agents

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