Liquid Polyamorphous Transition and Self-Organization in Aqueous Solutions of Ionic Surfactants

Mirgorod, Yu. A.; Dolenko, Tatiana A.

doi:10.1021/acs.langmuir.5b00479

Cited by 19 publications

(15 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They are accompanied by the same enthalpy change of 4.9 kJ/mol, but they have different phase transition temperatures. This conclusion was confirmed by another method [5]. In equation ( 3), the value of 22.48 kJ/mol of O-H bonds of water coincides with the value of ZPE of water [7], since at T = 0K ∆ = 0.…”

supporting

confidence: 56%

“…In our search for search for SCES, the last conclusion about water directs us to micellar surfactant solutions and here's the reason. Micelle formation is accompanied by a liquid-liquid phase transition in an ensemble of small water systems [5]. Small water systems are equal to the volume of surfactant molecules and therefore their extensive thermodynamic functions fluctuate up to 50%.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strongly Correlated Electronic States in Aqueous Micellar Surfactant

Mirgorod¹

2021

Preprint

View full text Add to dashboard Cite

Strongly correlated electronic states (SCES), that determine the anomalies of physicochemical properties, are well-known for solid materials at low temperatures. According to the mechanism of manifestation their existence can be assumed in biological cells with white spots, which makes us look into this challenging problem in detail. The paper presents its solution through a study of simple models of micellar solutions of ionic surfactants. The process of micelle formation with accompanying liquid-liquid phase transition makes us pay attention to possible anomalies of properties. Therefore the SCES of water micellar solution has been tested by compenstion and cooperative effects; and by small-angle, wide-angle X-ray, dynamic and chiral scattering of electromagnetic radiation. The solution water is represented by ensembles of small nano systems. Therefore, thermal (cavities for micelles 2-6 nm) and quantum (0.2-0.3 nm) fluctuations of water appear in the zone of concentration of micelle formation. Their energy is approximately equal to the H-bond. Contraction (expansion) of water H-bonds network of due to quantum fluctuations on a small scale correlates with the expansion (contraction) of the in the cavities in the micelles H-bonds network due to thermal fluctuations on a large scale. This phenomenon is caused by SСES.

show abstract

supporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Strongly Correlated Electronic States in Aqueous Micellar Surfactant

Mirgorod¹

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Consequently, the water content inside develops characteristics closer to "bulk" water. However, many researches considered that, even at moderate to high degrees of hydration, the different characteristics of water molecules inside RMs remain significant [22].…”

Section: Microemulsion Origin Of Reverse Micelles (Rms)mentioning

confidence: 99%

Versatility of Reverse Micelles: From Biomimetic Models to Nano (Bio)Sensor Design

et al. 2021

View full text Add to dashboard Cite

This paper presents an overview of the principal structural and dynamics characteristics of reverse micelles (RMs) in order to highlight their structural flexibility and versatility, along with the possibility to modulate their parameters in a controlled manner. The multifunctionality in a large range of different scientific fields is exemplified in two distinct directions: a theoretical model for mimicry of the biological microenvironment and practical application in the field of nanotechnology and nano-based sensors. RMs represent a convenient experimental approach that limits the drawbacks of the conventionally biological studies in vitro, while the particular structure confers them the status of simplified mimics of cells by reproducing a complex supramolecular organization in an artificial system. The biological relevance of RMs is discussed in some particular cases referring to confinement and a crowded environment, as well as the molecular dynamics of water and a cell membrane structure. The use of RMs in a range of applications seems to be more promising due to their structural and compositional flexibility, high efficiency, and selectivity. Advances in nanotechnology are based on developing new methods of nanomaterial synthesis and deposition. This review highlights the advantages of using RMs in the synthesis of nanoparticles with specific properties and in nano (bio)sensor design.

show abstract

“…According to the results [78,79], bubbles in cement mortar without AEA are rare and unstable, and much smaller bubbles can be produced in cement mortar with AEA, as shown in Figure 7 [78]. As we know, entraining a large number of uniform and tiny voids is more beneficial for both the workability and durability of cement concrete [80,81,82,83]. However, LAP seriously weakens the properties of AEA.…”

Section: Improvement Techniquesmentioning

confidence: 99%

“…The AEA is mainly a mixture of various surfactants. Its foaming capacity and foam stability mainly depend upon the adsorption and assembly of the hydrophilic and hydrophobic chains of surfactant molecules at the water-air interface [80,84,85]. However, the LAP environment in plateau areas greatly limits its surface activity.…”

Section: Improvement Techniquesmentioning

confidence: 99%

Impacts of Low Atmospheric Pressure on Properties of Cement Concrete in Plateau Areas: A Literature Review

et al. 2019

View full text Add to dashboard Cite

Low atmospheric pressure (LAP) can enormously affect properties of cement concrete in plateau areas. There are fewer studies and attendances on this issue than those of cement concrete in normal atmospheric pressure (AP), because of the limitations of both environmental conditions and instruments. In order to improve properties of cement concrete under LAP, influences of LAP on properties of cement concrete were reviewed in this work. The influence rules and mechanism on properties of cement concrete were summarized. The corresponding mechanism and techniques were put forward for enhancing the properties of cement concrete. The results of researchers show that LAP can significantly reduce the air entraining ability of the air entraining agent (AEA). Air content in concrete linearly decreases with the decrease of AP when other conditions are constant. If the initial air content is high, the decrease rate of air content increases with the decrease of AP. When the initial air content in cement concretes is similar, the greater the slump of cement concrete, the stronger its resistance to the decrease of air content caused by the decrease of AP. In addition, the condition of the bubble characteristics of hardened cement concrete under LAP is worse than that under normal AP. Therefore, the change of concrete properties under LAP is mainly attributed to these bubble characteristics, such as air content, bubble spacing coefficient, bubble radius and bubble specific surface area. In this work, nano-silica (negative charges) with cationic oligomeric surfactants is recommended as a new type of AEA to optimize the bubble characteristics under LAP in plateau areas.

show abstract

Liquid Polyamorphous Transition and Self-Organization in Aqueous Solutions of Ionic Surfactants

Cited by 19 publications

References 54 publications

Strongly Correlated Electronic States in Aqueous Micellar Surfactant

Strongly Correlated Electronic States in Aqueous Micellar Surfactant

Versatility of Reverse Micelles: From Biomimetic Models to Nano (Bio)Sensor Design

Impacts of Low Atmospheric Pressure on Properties of Cement Concrete in Plateau Areas: A Literature Review

Contact Info

Product

Resources

About