Micellization of Sodium Dodecyl Sulfate in Glycerol Aqueous Mixtures

Ruiz, C. Carnero; Díaz‐López, L.; Aguiar, J. Albino

doi:10.1080/01932690701707571

Cited by 54 publications

(52 citation statements)

References 39 publications

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“…DG o cosol due to the addition of glycerol to water was found positive for micellization of SDS [68] which is opposite to the present case. DG o cosol is positive for all ethanol-containing solvents considered here.…”

Section: Discussioncontrasting

confidence: 85%

Micellization of amphiphilic block copolymers in binary and ternary solvent mixtures

Sarkar

Ravi

Alexandridis

2013

Journal of Colloid and Interface Science

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Section: Discussioncontrasting

confidence: 85%

Micellization of amphiphilic block copolymers in binary and ternary solvent mixtures

Sarkar

Ravi

Alexandridis

2013

Journal of Colloid and Interface Science

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“…A spherical core-shell structure was initially used to model SDS aggregates in pure water, 44 and SDS micelles have also been described as ellipsoids in pure water and other polar organic solvents. 31,46 However structural changes in surfactant aggregates have been observed by the addition of salt to screen charge interactions 47 or where the counterion penetrates into the head group layer and promotes micellar growth. 48,49 These changes can be easily understood through the packing parameter.…”

Section: Discussionmentioning

confidence: 99%

Micelle structure in a deep eutectic solvent: a small-angle scattering study

Sanchez-Fernandez

Edler

Arnold

et al. 2016

Phys. Chem. Chem. Phys.

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In recent years many studies into green solvents have been undertaken and deep eutectic solvents (DES) have emerged as sustainable and green alternatives to conventional solvents since they may be formed from cheap non-toxic organic precursors. In this study we examine amphiphile behaviour in these novel media to test our understanding of amphiphile self-assembly within environments that have an intermediate polarity between polar and non-polar extremes. We have built on our recently published results to present a more detailed structural characterisation of micelles of sodium dodecylsulfate (SDS) within the eutectic mixture of choline chloride and urea. Here we show that SDS adopts an unusual cylindrical aggregate morphology, unlike that seen in water and other polar solvents. A new morphology transition to shorter aggregates was found with increasing concentration. The self-assembly of SDS was also investigated in the presence of water; which promotes the formation of shorter aggregates.

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“…From Ruiz et al (2008) describing the evolution of the micellization of SDS with the glycerol concentration in solution, it was demonstrated that the addition of glycerol increases the solubility of the SDS hydrophobic part. As a result, the miscibility of the hydrophilic part of the molecule decreases as the solution presents a higher affinity to the hydrophobic component.…”

Section: Resultsmentioning

confidence: 99%

Microfluidics approach to investigate foam hysteretic behaviour

Labarre

Vigolo

2019

Microfluid Nanofluid

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Foam stability often refers to the foam left to evolve with time in static conditions. However, in everyday life, foams are submitted to numerous deformations. A feature of foam stability is represented by the foam's ability to resist to the deformation and to recover its initial properties after deformation. The technique developed here allows for a qualitative evaluation of the property of foam recovery after a deformation in a flow-focusing microfluidic device. The foam hysteretic behaviour was evaluated by introducing the analogous of a standard three-step test in which the recovery of viscosity is commonly studied over three deformation stages. The foam behaviour is analysed over an induced cycle of ascendant and descendant deformation at the wall, well controlled by varying the gas pressure for a constant liquid pressure. Thus, the recovery of the two-row foam pattern used as reference is studied after a high deformation phase corresponding to the bamboo pattern and the level of hysteresis is measured qualitatively. The samples investigated comprise a range of Newtonian aqueous solutions containing 5 cmc (critical micellar concentration) of sodium dodecyl sulphate (SDS). A retardation effect was observed leading to hysteresis caused by the increase in viscosity. A higher surface elasticity produced a smaller but non-negligible hysteresis due to an excess in elastic energy caused by the increase of the duration of the bubble rearrangements. The present study has gone some way towards enhancing our understanding of the mechanisms triggering or enhancing foam hysteresis in a microchannel. The findings will be of interest to many industrial processes where foams are submitted to a series of deformation steps along the process line from food industrial applications to biological systems.

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Micellization of Sodium Dodecyl Sulfate in Glycerol Aqueous Mixtures

Cited by 54 publications

References 39 publications

Micellization of amphiphilic block copolymers in binary and ternary solvent mixtures

Micellization of amphiphilic block copolymers in binary and ternary solvent mixtures

Micelle structure in a deep eutectic solvent: a small-angle scattering study

Microfluidics approach to investigate foam hysteretic behaviour

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