Properties of the micelles of sulfonated methyl esters determined from the stepwise thinning of foam films and by rheological measurements

Basheva, Elka S.; Danov, Krassimir D.; Radulova, Gergana M.; Kralchevsky, Peter A.; Xu, Hui; Ung, Yee Wei; Petkov, Jordan T.

doi:10.1016/j.jcis.2018.12.034

Cited by 11 publications

(10 citation statements)

References 53 publications

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“…The mixing of anionic SME with a zwitterionic surfactant gives rise to the growth of giant wormlike micelles in the bulk of surfactant solution (Basheva et al, ; Yavrukova et al, ). The results in Fig.…”

Section: Results From the Cleaning Experiments And Discussionmentioning

confidence: 99%

“…Along with the detergency characterization, there is a considerable advance in the physicochemical characterization and theoretical modeling of adsorption and micellization of the different SME and their mixtures with other ionic or nonionic surfactants (Basheva et al, ; Danov et al, ; Ivanova et al, ; Patil et al, ; Wang et al, ; Wong et al, ; Xu et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Zwitterionic surfactants have been found to improve also the solubilization capacity of the ionic surfactants (Golemanov et al, ). Interactions in mixed solutions of zwitterionic and anionic surfactants have been described by different approaches and synergistic effects have been found (Angarska et al, ; Basheva et al, ; Danov et al, ; Hines et al, ). Amine‐oxide surfactants are among the most widely used zwitterionics and special attention has been paid to their salt and pH sensitivity (Maeda, ; Maeda et al, ; Schellmann et al, ; Singh et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Cleaning Ability of Mixed Solutions of Sulfonated Fatty Acid Methyl Esters

Yavrukova

Shandurkov

Marinova

et al. 2020

J Surfact & Detergents

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Here, we present results from a systematic study on cleaning of oily deposits from solid surfaces (porcelain and stainless steel) by solutions of fatty acid sulfonated methyl esters (SME), sodium salts. The zwitterionic dodecyldimethylamine oxide (DDAO) has been used as a cosurfactant. As representatives of the vegetable and mineral oils, sunflower seed oil and light mineral oil have been used. The process of oil drop detachment from the solid substrates (roll-up mechanism) has been monitored. In the case of porcelain, excellent cleaning of oil is achieved by mixed solutions of SME and DDAO. In the case of stainless steel, excellent cleaning (superior than that by linear alkylbenzene sulfonate and sodium lauryl ether sulfate) is provided by binary and ternary mixtures of SME, which may contain also DDAO. For the studied systems, the good cleaning correlates neither with the oil/water interfacial tension, nor with the surfactant chainlength and headgroup type. The data imply that governing factors might be the thickness and morphology of admicelle layers formed on the solid/water interface. The results indicate that the SME mixtures represent a promising system for formulations in house-hold detergency, having in mind also other useful properties of SME, such as biodegradability, skin compatibility, and hard water tolerance.

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Section: Results From the Cleaning Experiments And Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cleaning Ability of Mixed Solutions of Sulfonated Fatty Acid Methyl Esters

Yavrukova

Shandurkov

Marinova

et al. 2020

J Surfact & Detergents

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“…An important factor influencing the properties of CAPB in an aqueous solution is its strong interaction with anions [43]. Zwitterionic surfactants, comprising positive and negative groups in their headgroups, are essentially electro-neutral as monomers, but their micelles preferentially uptake anions similar to cationic surfactant micelles [44].…”

Section: Tem Morphological Observationmentioning

confidence: 99%

Synthesis of nanorod apatites with templates at critical micelle concentrations and in vitro evaluation of cytotoxicity and antimicrobial activity

Haung

Chen

Chang

et al. 2021

Journal of Asian Ceramic Societies

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This study aimed to investigate the synthesis, cytotoxicity, and antimicrobial activity of nanorod apatites obtained using different surfactants at their critical micelle concentrations via hydrothermal method. Nanoscale apatite was obtained from ionic solutions without a template (nHA) compared with synthesized nanorod apatites of T-nHA, S-nHA, F-nHA and P-nHA with four different templates, i.e. the cationic/cetyltrimethylammonium bromide (CTAB), anionic/sodium dodecyl sulfate (SDS), nonionic/Pluronic F-127, and zwitterionic/cocamidopropyl betaine (CAPB) surfactants. Results showed that all of the synthesized apatites have a nanoscale rod-shaped morphology with bacteriostatic properties on day 1. However, only the nanorod apatite of T-nHA demonstrated long-term antibacterial activity up to day 14 due to the combined nanoscale-sized effects and surface phenomena. Among the nanorod apatites produced by the surfactant molecular geometry and solution conditions, the synthesized nanorod apatite of P-nHA possessed the smallest homogeneous crystals. Cytotoxicity results revealed that the nanorod apatites of nHA and F-nHA present insignificant cytotoxicity. Given its acceptable bacteriostatic effect and biocompatibility, the F-nHA may be considered better than nHA. Compared with the conventional-sized apatites, surfactant template-assisted nanorod apatite of T-nHA with high antimicrobial activity may be used as composite grafts for reconstructive surgery to improve inflammation that may be caused by bacteria.

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“…Plots of experimental data from Ref. [58] for the zero-shear viscosity, η 0 , vs. the total surfactant concentration for binary mixed solutions of C n SME and CAPB (n = 14, 16) at three different mass ratios denoted in the graphs: (a) 1:1 and (b) 3:1 and 5:1. Plots of η 0 vs. w and σ max vs. w for 12 wt% C 16,18 SME + CAPB in the presence of various additives.…”

Section: Types Of Flow Curvesmentioning

confidence: 99%

Rheology of mixed solutions of sulfonated methyl esters and betaine in relation to the growth of giant micelles and shampoo applications

Yavrukova

Radulova

Danov

et al. 2020

Advances in Colloid and Interface Science

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This is a review article on the rheological properties of mixed solutions of sulfonated methyl esters (SME) and cocamidopropyl betaine (CAPB), which are related to the synergistic growth of giant micelles. Effects of additives, such as fatty alcohols, cocamide monoethanolamine (CMEA) and salt, which are expected to boost the growth of wormlike micelles, are studied. We report and systematize the most significant observed effects with an emphasis on the interpretation at molecular level and understanding the rheological behavior of these systems. The experiments show that the mixing of SME and CAPB produces a significant rise of viscosity, which is greater than in the mixed solutions of sodium dodecyl sulfate and CAPB. The addition of fatty alcohols, CMEA and cationic polymer, leads to broadening of the synergistic peak in viscosity without any pronounced effect on its height. The addition of NaCl leads to a typical salt curve with high maximum, but in the presence of dodecanol this maximum is much lower. At lower salt concentrations, the fatty alcohol acts as a thickener, whereas at higher salt concentrations -as a thinning agent. Depending on the shape of the frequency dependences of the measured storage and loss moduli, G' and G", the investigated micellar solutions behave as systems of standard or nonstandard rheological behavior. The systems with standard behavior obey the Maxwell viscoelastic model (at least) up to the crossover point (G' = G") and can be analyzed in terms of the Cates reptationreaction model. The systems with nonstandard rheological behavior obey the Maxwell model only in a restricted domain below the crossover frequency; they can be analyzed in the framework of an augmented version of the Maxwell model. The methodology for data analysis and interpretation could be applied to any other viscoelastic micellar system.

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Properties of the micelles of sulfonated methyl esters determined from the stepwise thinning of foam films and by rheological measurements

Cited by 11 publications

References 53 publications

Cleaning Ability of Mixed Solutions of Sulfonated Fatty Acid Methyl Esters

Cleaning Ability of Mixed Solutions of Sulfonated Fatty Acid Methyl Esters

Synthesis of nanorod apatites with templates at critical micelle concentrations and in vitro evaluation of cytotoxicity and antimicrobial activity

Rheology of mixed solutions of sulfonated methyl esters and betaine in relation to the growth of giant micelles and shampoo applications

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