Interfacial layer properties and foam film drainage kinetics of aqueous solutions of hexadecyltrimethylammonium chloride

Arabadzhieva, D.; Tchoukov, Plamen; Soklev, Borislav; Mileva, Elena

doi:10.1016/j.colsurfa.2014.04.053

Cited by 9 publications

(15 citation statements)

References 21 publications

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“…microinterferometry and macroscopic foamability, in order to investigate the effect of surface rheology on the stability of foams and emulsions. [33][34][35][36] In the present work, we have discussed the possibility of sub-monolayer adsorption for three low molecular weight alcohols; n-pentanol, methyl isobutyl carbinol (MIBC) and nhexanol ( Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Under-Monolayer Adsorption on Foamability, Rheological Characteristics, and Dynamic Behavior of Fluid Interfaces: Experimental Evidence for the Guggenheim Extended Interface Model

et al. 2017

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The surface saturation of solutions of three low-molecular-weight surface-active alcohols were identified independently using sum frequency generation spectroscopy. Tensiometry showed that solution surface tension kept decreasing uniformly and considerably even after full saturation of the adsorption monolayer. We employed Guggenheim's model of extended interface to attribute this observation to the ongoing adsorption of alcohol molecules beneath the saturated topmost adsorption layer. Our investigation of the dynamic behaviour of thin liquid films of alcohol solutions revealed the tremendous effect of sub-monolayer adsorption on the rheological characteristics of surface. Sub-monolayer region was found to function as a supplementary source of alcohol molecules. The fast diffusion of surfactants from sub-monolayer to the topmost adsorption layer imposed a buffering effect on the dynamic response of the surface through diminishing the surface tension gradient created by surface expansion. This resulted in sudden drop of the Gibbs elasticity and consequently faster decaying foam.

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Section: Introductionmentioning

confidence: 99%

“…The pre-micellization process may be reflected in the form of small kinks and additional plateaus in static surface tension plots. 34 It is also discussed that surface may not be fully saturated even at concentrations up to 10 times of CMC. 11 The absence of kinks and CMCs in Fig.…”

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confidence: 99%

Effect of Under-Monolayer Adsorption on Foamability, Rheological Characteristics, and Dynamic Behavior of Fluid Interfaces: Experimental Evidence for the Guggenheim Extended Interface Model

et al. 2017

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“…(6.16) adopts large values. In other terms, the initial surface tension right after expansion of the bubble surface is considerably higher than its equilibrium value; it hence takes some time for surface tension to recover from the perturbation (Arabadzhieva et al, 2014). For the alcohols studied in this work, the initial surface tensions were, however, the same as their equilibrium values and did not evolve over time, implying that these alcohols are fastadsorbing and the equilibrium state of the adsorption layer is regained very quickly.…”

Section: Equilibrium and Dynamic Surface Tension And Adsorption Isothmentioning

confidence: 69%

“…The conventional surfactants are believed to form pre-micelles at concentrations much lower than CMC (Cui et al, 2008). The pre-micellization process may be reflected in the form of small kinks and additional plateaus in static surface tension plots (Arabadzhieva et al, 2014). The absence of such kinks and CMCs in Fig.…”

Section: Equilibrium and Dynamic Surface Tension And Adsorption Isothmentioning

confidence: 99%

“…Because of the dynamic nature of TLFs during drainage, the oscillating bubble/drop technique has effectively been combined with TLF drainage measurements, e.g. microinterferometry and macroscopic foamability, in order to investigate the effect of surface rheology on the stability of foams and emulsions (Georgieva et al, 2009a;Arabadzhieva et al, 2014;Liu et al, 2017;Georgieva et al, 2009b).…”

Section: Introductionmentioning

confidence: 99%

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Molecular insights of adsorption and structure of surfactants and inorganic ions at fluid – liquid interfaces

Shahir¹

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Traditional approaches to studying fluid -liquid interfaces include the macroscopic measuring of interfacial properties such as surface tension and matching the collected data against adsorption models. This method is capable of producing valuable data about the thermodynamics of adsorption and has been widely used by the community to extract information about the adsorption of thousands of different surface-active molecules. Nonetheless, this methodology cannot produce any molecular-level information about the microscopic structure of adsorption layers and interfaces.As a result, the molecular origins of many interfacial phenomena remained unknown until the advent of surface-sensitive techniques such as computer simulation and non-linear spectroscopy.The new insights provided by these methods have challenged the traditional views about the origins of some interfacial phenomena and promise modification of classical theories which were developed to explain these phenomena.In general, this thesis aims to study the interfacial structure and adsorption of ionic surfactants, some surface-active alcohols as model nonionic surfactants including, n-pentanol, methyl isobutyl carbinol (MIBC) and n-hexanol and inorganic salts including LiCl, NaCl and CsCl at both microscopic and macroscopic levels. The employed methodology involves a combination of traditional adsorption modelling with some macroscopic measurements and sum frequency generation (SFG) spectroscopy, which is capable of distinguishing between bulk and interfacial molecules. Using SFG spectroscopy, the interfacial structure of adsorption layers and the composition of interfaces were investigated in detail and independently of the bulk solution.Specifically, the surface saturation of solutions of MIBC was identified directly using SFG spectroscopy and was then compared to equilibrium surface tension data to find that surface tension surprisingly continued to decrease even after full surface saturation. This is in contradiction to the traditional view that all surfactants adsorb at the outermost adsorption monolayer. Because of the limited surface area of the topmost adsorption monolayer, its full saturation is considered as the end of the adsorption process. This view is based on the notion of Gibbs dividing plane, which is usually taken as being equal to the physical adsorption monolayer in a surfactant solution. The postsaturation surface tension decrease, therefore, cannot be explained by the Gibbs convention. A different adsorption geometry, which considers the under-monolayer adsorption of alcohols, was proposed based on the Guggenheim extended interface model. In Chapter 5, a recent controversy about the applicability of the famous Gibbs adsorption isotherm to the analysis of surface tension data was addressed with regards to the new concept of under-monolayer adsorption. The results showed that the linearity of a surface tension plot is not necessarily indicative of a fully saturated ii surface. The same adsorption geometry was also proposed for t...

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A non‐ionic green surfactant extracted from the Anabasis setifera plant for improving bulk properties of CO₂‐foam in the process of enhanced oil recovery from carbonate reservoirs

Nowrouzi,

Mohammadi,

Khaksar Manshad

2024

Can J Chem Eng

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Foam, as a gas‐in‐liquid colloid, has a higher appearance viscosity than the one of both gas and liquid that form it. Adjusting the mobility ratio of the injected fluid–oil system and increasing gas diffusion in the foam injection process increase oil production. With these properties, foam as an injection fluid in fractured reservoirs has a major effect on oil production from the matrixes and prevents premature production of injection fluid. Surfactants are common foaming agents in injection water. Saponins are known as plant‐derived surfactants for forming stable foam. This feature, along with its cheap price and availability, can make them candidates for enhanced oil recovery (EOR) by the foam injection method. However, the utilization of CO2 as the gaseous phase in foam introduces additional machanisms of CO2 injection to the oil recovery operations. In this assessment, a non‐ionic green surfactant derived from the Anabasis setifera plant was used as a foaming agent, while CO2 served as the gas phase. A series of surface tension tests in CO2 environment were performed to determine the optimal concentration of the surfactant. Foaming tests were performed by a designed foam generator. The produced CO2‐foam was then injected into a fractured carbonate plug with six matrixes (with one horizontal and two vertical fractures). Based on the results, the water–CO2 surface tension was reduced to 20.549 mN/m. The optimum salinity based on the foam stability was 10,000 ppm. The half‐life of the foam was determined to be 40 min. Also, the foam characterization showed that the foamability of the surfactant was favourable for increasing oil production so that by secondary flooding, an oil recovery of more than 66% was achieved from the fractured carbonate plug.

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Interfacial layer properties and foam film drainage kinetics of aqueous solutions of hexadecyltrimethylammonium chloride

Cited by 9 publications

References 21 publications

Effect of Under-Monolayer Adsorption on Foamability, Rheological Characteristics, and Dynamic Behavior of Fluid Interfaces: Experimental Evidence for the Guggenheim Extended Interface Model

Effect of Under-Monolayer Adsorption on Foamability, Rheological Characteristics, and Dynamic Behavior of Fluid Interfaces: Experimental Evidence for the Guggenheim Extended Interface Model

Molecular insights of adsorption and structure of surfactants and inorganic ions at fluid – liquid interfaces

A non‐ionic green surfactant extracted from the Anabasis setifera plant for improving bulk properties of CO₂‐foam in the process of enhanced oil recovery from carbonate reservoirs

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Interfacial layer properties and foam film drainage kinetics of aqueous solutions of hexadecyltrimethylammonium chloride

Cited by 9 publications

References 21 publications

Effect of Under-Monolayer Adsorption on Foamability, Rheological Characteristics, and Dynamic Behavior of Fluid Interfaces: Experimental Evidence for the Guggenheim Extended Interface Model

Effect of Under-Monolayer Adsorption on Foamability, Rheological Characteristics, and Dynamic Behavior of Fluid Interfaces: Experimental Evidence for the Guggenheim Extended Interface Model

Molecular insights of adsorption and structure of surfactants and inorganic ions at fluid – liquid interfaces

A non‐ionic green surfactant extracted from the Anabasis setifera plant for improving bulk properties of CO2‐foam in the process of enhanced oil recovery from carbonate reservoirs

Contact Info

Product

Resources

About

A non‐ionic green surfactant extracted from the Anabasis setifera plant for improving bulk properties of CO₂‐foam in the process of enhanced oil recovery from carbonate reservoirs