Log in

Relevant bibliographies by topics / Synergistic mixtures of surfactants / Journal articles

Journal articles on the topic 'Synergistic mixtures of surfactants'

To see the other types of publications on this topic, follow the link: Synergistic mixtures of surfactants.

Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Synergistic mixtures of surfactants.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Zawala, Jan, Agata Wiertel-Pochopien, and Przemyslaw B. Kowalczuk. "Critical Synergistic Concentration of Binary Surfactant Mixtures." Minerals 10, no. 2 (February 20, 2020): 192. http://dx.doi.org/10.3390/min10020192.

Full text

Abstract:

This paper presents a simple method for determination of synergism in binary surfactant mixtures. A homologous series of cationic alkyltrimethylammonium bromides (CnTAB, with n = 8, 12, 16, 18) mixed with three non-ionic surfactants (n-octanol, methyl isobutyl carbinol, tri(propylene glycol) butyl ether) was chosen as a model system. In addition to the cationic-non-ionic system, the mixture of anionic-non-ionic surfactants (sodium dodecyl sulphate and tri(propylene glycol) butyl ether) was investigated. The foam behavior of one-component solutions and binary mixtures was characterized as a function of surfactant concentration, number of carbons (n) in alkyl chain of CnTAB as well as type of surfactant. It was shown that synergism in foamability could be produced by the ionic-non-ionic systems, and the concentration below the synergism occurs, called the critical synergistic concentration (CSC), that can be easily predicted based on the surface tension data on individual components.

APA, Harvard, Vancouver, ISO, and other styles

2

Abdel-Rahem, Rami A., Sana Niaz, Abdelmnim M. Altwaiq, Muayad Esaifan, Mohammad Bassam Al Bitar, and Abeer Al Bawab. "Synergistic interaction between sodium dodecyl benzene sulfonate (SDBS) and N,N-dimethyldodecan-1-amine oxide (DDAO) and their adsorption onto activated charcoal and Jordanian natural clay." Tenside Surfactants Detergents 59, no. 2 (February 28, 2022): 144–58. http://dx.doi.org/10.1515/tsd-2021-2395.

Full text

Abstract:

Abstract Solutions of sodium dodecyl benzene sulfonate (SDBS) and N,N-dimethyldodecan-1-amine oxide (DDAO) with mole fractions of 0.00, 0.25, 0.50, 0.75 and 1.00 were prepared and their surface tension was measured as a function of total surfactant concentration. The critical micelle concentration (CMC) values of these mixed solutions were also determined. The minimum area occupied by a surfactant molecule at air/water interface was calculated for single and binary surfactant mixtures. A pronounced synergistic interaction between SDBS and DDAO was detected. The surface tension and CMC-values of SDBS/DDAO mixtures are significantly lower than those of the single surfactant. The mixed system of SDBS/DDAO exhibits a highly negative interaction parameter (β = −10.6) according to regular solution model, and is found to fulfill the condition of Hua and Rosen, indicting a strong synergistic interaction between the two surfactants. The contact angle measurements show the wettability of the surfactant mixture onto polyethylene substrate is higher than of the respective single surfactant. In addition, the adsorption of SDBS and DDAO or their mixtures on 1.0% activated carbon and 5.0% Jordanian natural clay (JNC), respectively, was investigated using the depletion method. The individual surfactants were found to adsorb to a considerable extent on activated carbon, and a slightly higher adsorption tendency was even measured for mixed SDBS/DDAO surfactant systems. Although no SDBS molecules adsorbed on JNC, adsorption was observed for solutions containing DDAO and SDBS/DDAO surfactants. The improvement in wettability and adsorption of SDBS/DDAO surfactants at the air/water and solid/water interfaces is directly related to the synergistic interaction between the two surfactants.

APA, Harvard, Vancouver, ISO, and other styles

3

Liu, Z. Q. "Synergistic enhancement of glyphosate uptake into grasses by adjuvant combinations." Australian Journal of Agricultural Research 55, no. 4 (2004): 415. http://dx.doi.org/10.1071/ar03166.

Full text

Abstract:

The influence of various adjuvant combinations on the uptake of glyphosate was examined using a model grass species, wheat. Compared with each of 6 surfactants used alone, a greater uptake enhancement was observed when an aliphatic amine surfactant of higher ethylene oxide (EO) content was mixed with either a linear alcohol or an octylphenol non-ionic surfactant of lower EO content, at equivalent concentration. Surfactant ratio in a mixture was also important in the case of one combination. Three of the positive surfactant combinations were also tested on barnyard grass and their synergistic effect on glyphosate uptake was confirmed. The performance of one of the best surfactant combinations was further compared with a commercial glyphosate formulation by measuring the uptake rate of glyphosate into both wheat and ryegrass plants over a 24-h period. The surfactant mixture provided much faster uptake into both species and also significantly higher overall uptake into ryegrass. Whereas ammonium sulfate could also improve glyphosate uptake into wheat when used at high concentrations and in combination with certain non-ionic surfactants, the enhancing effect of a humectant, glycerol, on uptake was of much lower magnitude and observed only in the presence of super-spreading surfactants. The practical value of using surfactant mixtures is discussed.

APA, Harvard, Vancouver, ISO, and other styles

4

Stuzhuk, A. N., A. V. Shkolnikov, P. S. Gorbatov, and I. A. Gritskova. "Influence of emulgator nature on dispersity and stability of artificial polymer suspensions based on polycarbonate and polymethyl methacrylate." Fine Chemical Technologies 16, no. 6 (January 27, 2022): 490–501. http://dx.doi.org/10.32362/2410-6593-2021-16-6-490-501.

Full text

Abstract:

Objectives. To create stable artificial polymer suspensions with a positive charge of particles based on polycarbonate and polymethyl methacrylate using cationic surfactants and organosilicon surfactants.Methods. The size of droplets and polymer suspension particles was determined by photon correlation spectroscopy (dynamic light scattering) using a Zetasizer NanoZS laser particle analyzer (Malvern, UK).Results. Domestic cationic surfactants Katamin-AB and Azol-129 were found to be capable of producing stable artificial polycarbonate and polymethyl methacrylate suspensions. Based on the polymer, the optimal surfactant concentration was 6 wt %. The effect of polymer concentration in solution on the stability and particle size of final polymer suspensions was shown. It was determined that the polymer concentration in the solution should not exceed 10%. When obtaining a highly dispersed suspension during dispersion, a higher concentration causes an increase in the viscosity of emulsions. As a result of a synergistic effect formation, we used mixtures of cationic surfactants (Katamin-AB/Azol-138 and Azol-129/Azol-138) to enhance the stability of the final polymer suspensions. The optimal surfactant ratio was 9:1. The total concentration of the mixture is 10 wt %, based on the polymer. Polymer suspensions were stabilized with each of 2:1 mixtures of cationic surfactants Katamin-AB and Azol-129 withan organosilicon surfactant U-851. The total mixture concentration was 9 wt %, based on the polymer.Conclusions. New methods of producing artificial polycarbonate and polymethyl methacrylate suspensions in the presence of domestically produced cationic surfactants, as well cationicorganosilicon surfactants mixtures, were proposed. The colloidal-chemical properties of the obtained polymer suspensions were considered. It was found that using a 2:1 mixture of cationic and organosilicon surfactants produces polymer suspensions that are stable during production and storage.

APA, Harvard, Vancouver, ISO, and other styles

5

Liu, Jianfei, Yuru Wang, and Huifang Li. "Synergistic Solubilization of Phenanthrene by Mixed Micelles Composed of Biosurfactants and a Conventional Non-Ionic Surfactant." Molecules 25, no. 18 (September 21, 2020): 4327. http://dx.doi.org/10.3390/molecules25184327.

Full text

Abstract:

This study investigated the solubilization capabilities of rhamnolipids biosurfactant and synthetic surfactant mixtures for the application of a mixed surfactant in surfactant-enhanced remediation. The mass ratios between Triton X-100 and rhamnolipids were set at 1:0, 9:1, 3:1, 1:1, 1:3, and 0:1. The ideal critical micelle concentration values of the Triton X-100/rhamnolipids mixture system were higher than that of the theoretical predicted value suggesting the existence of interactions between the two surfactants. Solubilization capabilities were quantified in term of weight solubilization ratio and micellar-water partition coefficient. The highest value of the weight solubilization ratio was detected in the treatment where only Triton X-100 was used. This ratio decreased with the increase in the mass of rhamnolipids in the mixed surfactant systems. The parameters of the interaction between surfactants and the micellar mole fraction in the mixed system have been determined. The factors that influence phenanthrene solubilization, such as pH, ionic strength, and acetic acid concentration have been discussed in the paper. The aqueous solubility of phenanthrene increased linearly with the total surfactant concentration in all treatments. The mixed rhamnolipids and synthetic surfactants showed synergistic behavior and enhanced the solubilization capabilities of the mixture, which would extend the rhamnolipids application.

APA, Harvard, Vancouver, ISO, and other styles

6

Liu, Z. Q., and J. A. Zabkiewicz. "Influence of surfactant mixtures on cuticular uptake of glyphosate into grasses." Proceedings of the New Zealand Plant Protection Conference 52 (August 1, 1999): 228–33. http://dx.doi.org/10.30843/nzpp.1999.52.11606.

Full text

Abstract:

The uptake of glyphosate into wheat and two grass species in the presence of surfactants varied with surfactant structure, ethylene oxide (EO) content and concentration. A synergistic uptake enhancement into wheat and barnyard grass was observed when an aliphatic amine surfactant was mixed with either an alcohol or octylphenol nonionic surfactant with different EO content, at equivalent concentration. The effect of an amine+alcohol surfactant mixture on glyphosate uptake into wheat and ryegrass was compared with commercial glyphosate formulations.

APA, Harvard, Vancouver, ISO, and other styles

7

Azum, Naved, Malik Abdul Rub, Sulaiman Yahya Alfaifi, and Abdullah M. Asiri. "Interaction of Diphenhydramine Hydrochloride with Cationic and Anionic Surfactants: Mixed Micellization and Binding Studies." Polymers 13, no. 8 (April 9, 2021): 1214. http://dx.doi.org/10.3390/polym13081214.

Full text

Abstract:

The focus of the present work is to evaluate the interactions of an anti-allergic drug (diphenhydramine hydrochloride, DPH) with anionic (sodium dodecyl sulfate, SDS) and cationic (cetylpyridinium chloride, CPC) surfactants in the aqueous medium. The mixed micellization behavior and surface properties of drug-surfactant mixtures have been examined by surface tension measurements. Various theoretical approaches were applied to explore the synergistic or non-ideal behavior of the current mixed systems. Furthermore, the binding studies of drug with surfactants have been elaborated by UV–visible spectroscopy. Benesi–Hildebrand (B-H) theory was used to compute stoichiometric ratio, binding constant, and free energy change for the drug-surfactant mixtures. The outputs are deliberated taking into consideration the use of surfactants as capable drug delivery agents for DPH and hence advance bioavailability.

APA, Harvard, Vancouver, ISO, and other styles

8

Smith, Regina A., Elena Yu Demyantseva, and Ol’ga S. Andranovich. "IMPACT OF LIPASE ON MICELLE FORMATION AND SOLUBILIZATION ABILITIES OF NON-IONIC SURFACTANTS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 6 (June 6, 2018): 54. http://dx.doi.org/10.6060/tcct.20186106.5696.

Full text

Abstract:

Biotechnology is one of the fastest growing sector of scientific and applied activities of the humans, which needs to be successfully integrated into existing technologies. Such upcoming trend is the combination of conventional pulp treatment by surfactants and enzymatic processing in order to prevent pitch troubles in the pulp and paper mills. This article presents the research results of the abilities of non-ionic surfactants (sintamid-5, sintanol DS-10), enzyme (lipase) and their syner-gistic combinations to the micelle formation and solubilization. We chose the optimal synergistic compositions and investigated their colloid-chemical characteristics. There is no effect to the micelle formation ability of surfactants when addition of lipase is up to 30%. The largest deviation from the additive values of surface activity was observed for the mixture of individual non-ionic surfactant and lipase at the ratio of 70:30. However, in the all mixtures of both surfactants and lipase the ratio of experimental surface activity to the theoretically calculated is less than one. It looks, that hydrophilic areas of mixed aggregates block hydrophobic areas of lipase thereby preventing adsorption of lipase at the interface. A predominance of the surfactant in the composition will reduce its cost. The maximum of solubilizing capacity has sintanol DS-10 due to its highest HLB and the lowest CMC that leads to more micelles amount in solution and higher total hydrocarbon volume. The pitch solubilization in lipase solutions does not depend on enzyme concentration. The high pitch dissolving in synergistic mixture of sintanol DS-10 and lipase is observed. It is predetermines the usage of such systems for cellulose deresination.For citation:Smith R.A., Demyantseva E.Yu. Andranovich, O.S. Impact of lipase on micelle formation and solubilization abilities of non-ionic surfactants. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 6. P. 54-60

APA, Harvard, Vancouver, ISO, and other styles

9

Connolly, TJ, VC Reinsborough, and XY Xiang. "Solubilization of pada in Hydrocarbon Fluorocarbon Surfactant Mixtures." Australian Journal of Chemistry 45, no. 4 (1992): 769. http://dx.doi.org/10.1071/ch9920769.

Full text

Abstract:

Solubilities of pyridine-2-azo-p-dimethylaniline ( pada ) were determined at 25�C in four mixed fluorocarbon/hydrocarbon short-chained surfactant systems: ( i ) sodium decyl sulfate/sodium perfluoroheptanoate; (ii) sodium octanesulfonate /sodium perfluorooctanoate ; (iii) sodium octanesulfonate /sodium perfluoroheptanoate ; (iv) sodium nonanesulfonate /sodium perfluoroheptanoate. Systems ( i ), (iii) and (iv) showed micellar miscibility (one mixed micelle) and synergistic solubilization effects. System (ii) had two critical micelle concentrations pointing to two micellar forms in solution, and no synergism could be detected. From these four examples, it is deduced that single mixed micelles are formed when the critical micelle concentrations of the pure surfactants are within a factor of 3 of each other.

APA, Harvard, Vancouver, ISO, and other styles

10

Azum, Naved, Malik Abdul Rub, and Abdullah M. Asiri. "Mixed Micellization and Spectroscopic Studies of Anti-Allergic Drug and Non-Ionic Surfactant in the Presence of Ionic Liquid." Polymers 13, no. 16 (August 17, 2021): 2756. http://dx.doi.org/10.3390/polym13162756.

Full text

Abstract:

In drug delivery, surfactants are used to reduce side effects and to increase drug efficiency. The present work aimed to study the interaction of diphenhydramine hydrochloride (anti-allergic drug) with TX–45 (non-ionic surfactant) in the absence and presence of ionic liquid (1-hexyl-3-methylimidazolium chloride). The physicochemical parameters were estimated by the surface tension measurement. Various theoretical models (Clint, Rubingh, Motomura, and Maeda) were applied to determine the attractive behavior between drug and surfactant mixtures at the surface and in bulk. The drug and surfactant mixtures exhibit synergistic behavior in the absence and presence of ionic liquid. Several energetic parameters were also estimated with the assistance of regular solution approximation and pseudo phase separation model that indicate micelle formation and adsorption of surfactant at the surface is thermodynamically advantageous. The morphology of pure and mixture of amphiphiles has been estimated by the Tanford and Israelachvili theories. UV-visible spectroscopy was used to quantify the attractive behavior of the drug with surfactant with the help of a binding constant (K).

APA, Harvard, Vancouver, ISO, and other styles

11

Kochkodan, Olha, Nadiya Antraptseva, and Roman Zhyla. "ANALYSIS OF INTERMOLECULAR INTERACTIONS IN MIXED ADSORPTION LAYERS OF SURFACTANTS." Ukrainian Chemistry Journal 85, no. 5 (July 31, 2019): 69–74. http://dx.doi.org/10.33609/0041-6045.85.5.2019.69-74.

Full text

Abstract:

The adsorption of the surfactants mixtures of different chemical nature such as Triton X-100 and sodium hexadecyl sulfate at the surface of graphitized carbon black was studied. Using the model of phase separation (the Rubi–Rosen approach), the composition of the mixed adsorption layers and parameters of interaction between the surfactant molecules in the adsorption layers were calculated. It was found that mixed adsorption layers are enriched with molecules of the non-ionic surfactant Triton X-100. The purpose of the work was to study the adsorption of binary mixtures of surfactants of various chemical nature on the surface of non-porous hydrophobic carbon sorbent at different SAS ratio in mixtures. The results of calculations show that the composition of the adsorption layer on the surface of the GC is significantly different from the ratio of surfactants in the solution. The value of the parameter χ indicates that the mixed adsorption layer on the surface of the GC is enriched with non-ionic surfactant molecules, even with a small its content in the solution (αTХ-100 = 0,2). With an increase in the ТХ-100 molar fraction in the binary solution from 0,2 to 0,8 its share in the adsorption layer increases in approximately 1.5 times. Negative values of the interaction parameters βs indicate excessive attraction of the molecules and ions of the mixture components in the mixed adsorption layers. An increase in the absolute value of the parameter βs with an increase in αTХ-100 in the solution characterizes the enhancement of the interactions between the components in the adsorption layer. Thus, in the course of experiments carried out for mixed systems of SHDS-ТХ-100, the existence of a synergistic effect in relation to an increase in the adsorption of surfactants on the GC surface was established. It is found that mixed adsorption layers are enriched with molecules of the non-ionic surface active substance of the triton X-100.

APA, Harvard, Vancouver, ISO, and other styles

12

Esan, Olaseni Segun, Medinat Olubunmi Osundiya, Christopher Olumuyiwa Aboluwoye, Owoyomi Olanrewaju, and Jide Ige. "Thermodynamic and Interfacial Properties of DTABr/CTABr Mixed Surfactant Systems in Ethanolamine/Water Mixtures: A Conductometry Study." ISRN Thermodynamics 2013 (December 17, 2013): 1–7. http://dx.doi.org/10.1155/2013/280101.

Full text

Abstract:

Mixed-micelle formation in the binary mixtures of dodecyltrimethylammonium bromide (DTABr) and cetyltrimethylammonium bromide (CTABr) surfactants in water-ethanolamine mixed solvent systems has been studied by conductometric method in the temperature range of 298.1 to 313.1 K at 5 K intervals. It was observed that the presence of ethanolamine forced the formation of mixed micelle to lower total surfactant concentration than in water only. The synergistic interaction was quantitatively investigated using the theoretical models of Clint and Rubingh. The interaction parameter β12 was negative at all the mole fractions of DTABr in the surfactant mixtures indicating a strong synergistic interaction, with the presence of ethanolamine in the solvent system resulting in a more enhanced synergism in micelle formation than in water only. The free energy of micellization ΔGM values was more negative in water-ethanolamine mixed solvent system than in pure water indicating more spontaneity in mixed micelle formation in the presence of ethanolamine than in pure water.

APA, Harvard, Vancouver, ISO, and other styles

13

Azum, Naved, Malik Abdul Rub, Anish Khan, Maha M. Alotaibi, Abdullah M. Asiri, and Mohammed M. Rahman. "Mixed Micellization, Thermodynamic and Adsorption Behavior of Tetracaine Hydrochloride in the Presence of Cationic Gemini/Conventional Surfactants." Gels 8, no. 2 (February 17, 2022): 128. http://dx.doi.org/10.3390/gels8020128.

Full text

Abstract:

In this approach, tensiometry and UV-visible techniques are used to determine the effect of cationic gemini and conventional surfactants on tetracaine hydrochloride (TCH), an anesthetic drug. We have estimated micellar, interfacial, and energetic constraints. To gain a deep understanding of their mixed association behavior, the outputs were examined using different theoretical models. The critical micelle concentration for single and mixed amphiphiles was estimated. The cmc values of mixed amphiphiles were found between the individual amphiphiles due to strong attractive interaction (synergism) between the components after mixing. The non-ideal behavior of mixtures was confirmed by the larger values of ideal cmc than the experimental cmc values. The negative values of interaction parameter (β) and values of activity coefficients less than unity indicate strong synergistic interaction between drug and surfactant. The stability of the mixed systems is demonstrated by the negative Gibbs free energy of micellization and excess free energy of micellization. In contrast to a single chain surfactant, a double chain surfactant (gemini) exhibits better interactions with the drug. Spectral measurements (UV-visible spectra) were used to monitor the binding of the drug with surfactant (conventional as well as gemini). Studying these mixed aggregates could help to optimize their compositions and find synergistic properties between TCH monomers and surfactants.

APA, Harvard, Vancouver, ISO, and other styles

14

Azum, Naved, Malik Abdul Rub, Anish Khan, Maha M. Alotaibi, and Abdullah M. Asiri. "Synergistic Interaction and Binding Efficiency of Tetracaine Hydrochloride (Anesthetic Drug) with Anionic Surfactants in the Presence of NaCl Solution Using Surface Tension and UV–Visible Spectroscopic Methods." Gels 8, no. 4 (April 11, 2022): 234. http://dx.doi.org/10.3390/gels8040234.

Full text

Abstract:

Surfactants are ubiquitous materials that are used in diverse formulations of various products. For instance, they improve the formulation of gel by improving its wetting and rheological properties. Here, we describe the effects of anionic surfactants on an anesthetic drug, tetracaine hydrochloride (TCH), in NaCl solution with tensiometry and UV–visible techniques. Various micellar, interfacial, and thermodynamic parameters were estimated. The outputs were examined by using different theoretical models to attain a profound knowledge of drug–surfactant mixtures. The presence of attractive interactions among drug and surfactant monomers (synergism) in mixed micelle was inferred. However, it was found that sodium dodecyl sulfate (SDS) showed greater interactions with the drug in comparison to sodium lauryl sarcosine (SLS). The binding of the drug with surfactants was monitored with a spectroscopic technique (UV–visible spectra). The results of this study could help optimize the compositions of these mixed aggregates and find the synergism between monomers of different used amphiphiles.

APA, Harvard, Vancouver, ISO, and other styles

15

He, Binbin, Liangliang Lin, and Hujun Xu. "Study on Binary Mixture System of Lauroyl Sodium Glutamate Surfactant." Tenside Surfactants Detergents 58, no. 1 (January 1, 2021): 20–26. http://dx.doi.org/10.1515/tsd-2019-2210.

Full text

Abstract:

Abstract In the present study, binary mixtures of sodium N-lauroylglutamate (SLG) and dodecyltrimethylammonium chloride (DTAC) or dodecylbetaine (BS-12) were examined for their synergistic effect. The surface chemical properties of the compound systems with different molar ratios were determined by the regular solution theory. Results indicated that both compound systems show synergistic effects of overall synergy, in which the SLG/DTAC system exhibited a better activity than the SLG/BS-12 system. The aggregation number of SLG compound systems was smaller than that of single surfactants, and the difference of the proportion of the two surfactants had little effect on the aggregation number of compound systems.

APA, Harvard, Vancouver, ISO, and other styles

16

Journal, Baghdad Science. "Synergistic Interaction in the adsorbed mixed surfactants film of Sodium Dodecyl Sulfate and Cocamidopropyl Betaine on Liquid – Air Interfacial." Baghdad Science Journal 13, no. 2 (June 5, 2016): 1–9. http://dx.doi.org/10.21123/bsj.13.2.1-9.

Full text

Abstract:

In the present work, the critical micelle concentration (CMC) of the solution of Sodium dodecyl sulfate (SDS) as anionic surfactant, Cocamidopropyl Betaine (CAPB) as amphoteric surfactant, and their mixture have been determined using surface tension and conductivity measurements at a temperature range 293 -323 K. The adsorption and thermodynamic micellization parameters (?G?m, ?G?ads, ?max ,Amin,?cmc ) for individual surfactants was calculated. Rosen model which is focuses on the adsorbed mixed surfactant film at the air/solution interface was used to calculate the interaction parameter ( ?? ) at the interface and the activity coefficients g1 and g2. The results indicate that the CMC of the individual surfactants was affected by the temperature at the temperature range studied. Also, the results indicate a synergistic effect present at the air – solution mixed film of surfactants.

APA, Harvard, Vancouver, ISO, and other styles

17

Fernández-Peña, Laura, Eduardo Guzmán, Coral Fernández-Pérez, Irene Barba-Nieto, Francisco Ortega, Fabien Leonforte, Ramón G. Rubio, and Gustavo S. Luengo. "Study of the Dilution-Induced Deposition of Concentrated Mixtures of Polyelectrolytes and Surfactants." Polymers 14, no. 7 (March 25, 2022): 1335. http://dx.doi.org/10.3390/polym14071335.

Full text

Abstract:

Mixtures of polyelectrolytes and surfactants are commonly used in many technological applications where the challenge is to provide well-defined modifications of the surface properties, as is the case of washing formulations in cosmetics. However, if contemporary experimental and theoretical methods can provide insights on their behavior in concentrated formulations, less is known on their behavior under practical use conditions, e.g., under dilution and vectorization of deposits. This makes it difficult to make predictions for specific performance, as, for example, good hair manageability after a shampoo or a comfortable sensorial appreciation after a skin cleanser. This is especially important when considering the formulation of new, more eco-friendly formulations. In this work, a detailed study of the phase separation process induced by dilution is described, as well as the impact on the deposition of conditioning material on negatively charged surfaces. In order to gain a more detailed physical insight, several polyelectrolyte–surfactant pairs, formed by two different polymers and five surfactants that, although non-natural or eco-friendly, can be considered as models of classical formulations, have been studied. The results evidenced that upon dilution the behavior, and hence its deposition onto the surface, cannot be predicted in terms of the behavior of simpler pseudo-binary (mixtures of a polymer and a surfactant) or pseudo-ternary mixtures (two polymers and a surfactant). In many cases, phase separation was observed for concentrations similar to those corresponding to the components in some technological formulations, whereas the latter appeared as monophasic systems. Therefore, it may be assumed that the behavior in multicomponent formulations is the result of a complex interplay of synergistic interactions between the different components that will require revisiting when new, more eco-sustainable ingredients are considered.

APA, Harvard, Vancouver, ISO, and other styles

18

Ginzburg, Aurora L., Lisa Truong, Robert L. Tanguay, and James E. Hutchison. "Synergistic Toxicity Produced by Mixtures of Biocompatible Gold Nanoparticles and Widely Used Surfactants." ACS Nano 12, no. 6 (April 26, 2018): 5312–22. http://dx.doi.org/10.1021/acsnano.8b00036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Streltsova, E. A., O. V. Voliuvach, and E. D. Bondar. "SURFACE TENSION AND ASSOCIATION IN AQUEOUS SOLUTION SURFACTANTS IN THE PRESENCE OF POLYACRYLAMIDE." Odesa National University Herald. Chemistry 26, no. 4(80) (December 26, 2021): 70–80. http://dx.doi.org/10.18524/2304-0947.2021.4(80).250930.

Full text

Abstract:

The surface tension of aqueous solutions of cationic (dodecylammonium and dodecylpyridinium chlorides) and anionic (sodium dodecylsulfate) surfactants was measured in the presence of polyacrylamide in the solution. A synergistic effect of reducing the surface tension of mixed solutions of cationic surfactants, in the region of sufficiently high concentrations of mixed solutions of sodium dodecyl sulfate, with polyacrylamide in the range of molar ratios of the mixture components - n (Surfactants : PAA) = 1: 1; 1: 0.25 was established. The values of the maximum adsorption, the values of the area per molecule or associate of surfactants in the adsorption layer, as well as the standard Gibbs free energy of adsorption of surfactant - PAA associates are calculated. In accordance with Rosen's model, the composition of mixed adsorption layers at the solution-air interface is calculated, as well as the parameter of intermolecular interaction in adsorption layers between molecules, cationic and anionic ions surfactants and PAA. The values of the critical micelle concentration (CMC) of individual surfactants in aqueous solutions exceed the CMC of the studied surfactants in the presence of PAA, which promotes micelle formation.

APA, Harvard, Vancouver, ISO, and other styles

20

Arabadzhieva, Dimi, Plamen Tchoukov, and Elena Mileva. "Impact of Adsorption Layer Properties on Drainage Behavior of Microscopic Foam Films: The Case of Cationic/Nonionic Surfactant Mixtures." Colloids and Interfaces 4, no. 4 (November 13, 2020): 53. http://dx.doi.org/10.3390/colloids4040053.

Full text

Abstract:

Aqueous mixtures of cationic hexadecyltrimethylammonium chloride (CTAC) and nonionic pentaethyleneglycol monododecyl ether (C12E5) are investigated. Adsorption layer properties are systematically studied within a wide concentration range for a 1:1 molar ratio of the surfactants. Surface tension and dilatational rheology measurements are conducted by profile analysis tensiometry. The interfacial data are juxtaposed to drainage kinetics and stability results for microscopic foam films, investigated by microinterferometric thin liquid film instrumentation. The obtained results give experimental evidence of synergistic interactions in the studied solutions, as compared to the corresponding single surfactant systems. Specific runs of dynamic and equilibrium surface tension curves are registered against the total surfactant quantity; the surface dilatational elasticities for the mixtures are systematically higher. A clear correlation is established between adsorption layer performance and foam film characteristics. The maxima of the film lifetimes are well outlined, and the respective values are shifted towards lower overall concentrations. The reported results substantiate the key role of the adsorption layers, and the surface dilatational properties in particular, for foam film drainage kinetics and stability. The well-expressed synergy observed in adsorption layer and foam film properties suggests the substantial benefits of using mixed surfactant systems in the design and fine-tuning of foam systems for innovative applications.

APA, Harvard, Vancouver, ISO, and other styles

21

Raghavan, Srinivasa R., Gerhard Fritz, and Eric W. Kaler. "Wormlike Micelles Formed by Synergistic Self-Assembly in Mixtures of Anionic and Cationic Surfactants." Langmuir 18, no. 10 (May 2002): 3797–803. http://dx.doi.org/10.1021/la0115583.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Srikanth Vemuri, R. S. S., P. Shyamala, and Sk Ameer Khan. "Kinetics of Dissociation of bis(2,4,6-Tripyridyl-s-triazine)iron(II) and tris(2,2′-Bipyridyl)iron(II) in the presence of Triton X-100/Tween 80 Mixed Micellar Medium." Asian Journal of Chemistry 32, no. 8 (2020): 1955–60. http://dx.doi.org/10.14233/ajchem.2020.22709.

Full text

Abstract:

Surface tension studies were carried on the binary surfactant mixtures over a wide range of Triton X-100 mole fractions and total surfactant concentrations to obtain critical micellar concentration values. These values were used to determine the composition of the mixed micelles and the average interaction parameter (β) which contains all the interactions of the mixed surfactants. The method is based on Rubingh′s theory using a Gauss-Newton iteration technique written in FORTRAN. The value of β was found to be -0.69 indicating synergistic behaviour i.e., combined positive catalytic effect of both the surfactants on rates of reactions. Hence, the kinetics of dissociation of bis(2,4,6-tripyridyl-striazine) iron(II) ([Fe(tptz)2]2+) and tris(2,2′-bipyridyl)iron(II) ([Fe(bipy)3]2+) were studied in the presence of Triton X-100/Tween 80 mixed micellar medium. The reactions have been carried out in the presence of mixed micelles of Triton X-100/Tween 80 at various mole fractions of Triton X-100 (αTX-100 = [Triton X-100]/([Triton X-100] + [Tween 80])) and at different total surfactant concentrations of Triton X-100 and Tween 80 (Ct = [Triton X-100] + [Tween 80]). The results show that as αTX-100 increases the rate increases for all values of Ct. Kinetic analysis has been carried out by using a simple pseudo phase model and binding constants were determined. These binding constants were found to be in agreement with the binding constants obtained spectrophotometrically.

APA, Harvard, Vancouver, ISO, and other styles

23

Bergström, L. Magnus, and Makoto Aratono. "Synergistic effects in mixtures of two identically charged ionic surfactants with different critical micelle concentrations." Soft Matter 7, no. 19 (2011): 8870. http://dx.doi.org/10.1039/c1sm06064c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Chavan, Akshaya Ravindra, and Sunil S. Bhagwat. "Synergistic behavior of SLS-OPE-10 binary mixtures at their CMC." Tenside Surfactants Detergents 59, no. 2 (February 28, 2022): 134–43. http://dx.doi.org/10.1515/tsd-2021-2398.

Full text

Abstract:

Abstract The micellation behaviour of mixtures of sodium lauryl sulphate (SLS) and octylphenol ethoxylate-10 (OPE-10) was investigated using tensiometry and dye solubilisation. The interaction parameters for the system were determined using Rubingh’s model for non-ideality and the adsorption parameters were calculated. The surfactant mixture was found to behave synergistically in terms of CMC reduction and dye solubilisation. Furthermore, the mixture appears to mimic the adsorption and micellation properties of OPE-10 more closely than SLS, regardless of composition. With this knowledge, and considering that OPE-10 is typically more expensive than SLS, the formulator can now use only a fraction of the required amount of OPE-10 for a given application (instead of using 100% OPE-10), resulting in high performance yet economical products. It was also found that the said mixture exhibits azeotropic behaviour at a certain fixed composition.

APA, Harvard, Vancouver, ISO, and other styles

25

Lukowicz, Thomas, Roberto Company Maldonado, Valérie Molinier, Jean-Marie Aubry, and Véronique Nardello-Rataj. "Fragrance solubilization in temperature insensitive aqueous microemulsions based on synergistic mixtures of nonionic and anionic surfactants." Colloids and Surfaces A: Physicochemical and Engineering Aspects 458 (September 2014): 85–95. http://dx.doi.org/10.1016/j.colsurfa.2013.11.024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Pirog, T. P., L. V. Kliuchka, T. A. Shevchuk, and G. O. Iutynska. "Destruction of Biofilms on Silicone Tubes under the Action of a Mixture of Nocardia vaccinii IMV B-7405 Surfactants with other Biocides." Mikrobiolohichnyi Zhurnal 83, no. 4 (August 17, 2021): 43–53. http://dx.doi.org/10.15407/microbiolj83.04.043.

Full text

Abstract:

The formation of pathogenic microorganisms biofilms on the central venous catheter is the cause of catheter-associated infections. An alternative method of combating biofilms is the use of “antibacterial” and “antifungal” locks, which are solutions of antibiotics or antifungal drugs in a mixture with other natural compounds, which can be microbial surface-active substances (surfactants) or essential oils. Aim. To investigate the role of Nocardia vaccinii IMV B-7405 surfactants mixture with other antimicrobial compounds in the destruction of biofilm on silicone tubes. Methods. N. vaccinii IMV B-7405 was grown in medium containing as carbon source purified glycerol and waste from biodiesel production, refined sunflower oil, oil after frying French-fried potatoes, Potato wedges and meat. The surfactants were extracted from supernatant of cultural liquid by modified Folch mixture. 2 mL of surfactant solutions, antifungal drugs (nystatin, fluconazole) or tea tree essential oil of the same concentration (5–640 μg/mL) were added to test tubes with silicone tubes (with pre-formed biofilm from test culture). To study the synergistic effect of the biofilms destruction, a mixture of surfactant solutions and antifungal substances (or essential oil) of the same concentration in a ratio of 1:1 (1 mL of each solution) was added to the test tubes. Sterile tap water (2 mL) was added to control test tubes instead of surfactants preparations, antifungal substances or essential oil. The degree of biofilm destruction (%) was determined as the difference between the adhesion of cells on the inner side of silicone tubes, untreated and treated with surfactants, antifungal drugs, essential oil, or their mixture. Results. It was found that surfactants synthesized by N. vaccinii IMV B-7405 on all substrates showed synergism of yeast and bacterial biofilms destruction on silicone tubes in a mixture with nystatin, fluconazole and tea essential oil in the whole range of investigated concentrations (5–640 μg/mL), but the highest effect was achieved at a concentration of 20–40 μg/mL. Thus, the degree of Candida albicans D-6, Candida utilis BVS-65 and Candida tropicalis PE-2 biofilms destruction under the action of a mixture of surfactants synthesized on waste from the biodiesel production and waste oil, with antifungal drugs was 45.8–71.8% and was higher than with only surfactants (21.2–41.6%), nystatin (22.4–24.1%) or fluconazole (28.1–31.3%). The destruction of Candida genus yeast biofilms under the action of surfactants synthesized on oil-containing substrates in a mixture with both nystatin and fluconazole reached 50.1–71.2%, which is 10–30% higher compared to the use of surfactants alone or only antifungal agents. The degree of Pseudomonas sp. MI-2, Escherichia coli IEM-1, Staphylococcus aureus BMS-1, Bacillus subtilis BT-2 (spores) biofilms destruction on silicone tubes treated with a mixture of tea tree essential oil and surfactants synthesized on all oil-containing substrates was 10–29% higher than in the case of using only solutions of surfactants (11.5–45.4%) or essential oil (21.4–34.5%) for the tubes treatment. Conclusions. The data obtained make it possible to consider surfactants synthesized by N. vaccinii IMV B-7405 on a wide range of cheap and accessible substrates as promising components of “antibacterial” and “antifungal” locks in combination with essential oils and antifungal agents.

APA, Harvard, Vancouver, ISO, and other styles

27

Abdul Rub, Malik. "Investigation of micellar and interfacial phenomenon of amitriptyline hydrochloride with cationic ester-bonded gemini surfactant mixture in different solvent media." PLOS ONE 15, no. 11 (November 6, 2020): e0241300. http://dx.doi.org/10.1371/journal.pone.0241300.

Full text

Abstract:

Herein, the interaction among the antidepressant drug amitriptyline hydrochloride (AMT) and a green gemini surfactant, ethane-1, 2-diyl bis(N,N-dimethyl-N-tetradecylammoniumacetoxy) dichloride (14-E2-14), via numerous techniques such as tensiometry, fluorimetry, FT-IR and UV-visible spectroscopy in three different media (aqueous 0.050 mol·kg-1 NaCl, 0.50 and 1.0 mol·kg-1 urea) were investigated. AMT is used to treat mental illness or mood problems, such as depression. The aggregation of biologically active ingredients can enhance the bioavailability of hydrophobic drugs. A significant interaction between AMT and 14-E2-14 was detected by tensiometric study as the critical micelle concentration (cmc) of AMT+14-E2-14 is reduced upon an increase of mole fraction (α1) of 14-E2-14. The decrease in cmc indicates the nonideality of studied mixtures of different compositions. Although, employed drug AMT is freely soluble in the aqueous and non-aqueous system but is not hydrophobic enough to act as its carrier. Instead, gemini surfactant formed spherical micelles in an aqueous system and their high solubilization capability, as well as their relatively lower cmc value, makes them highly stable in vivo. The cmc values of AMT+14-E-14 mixtures in all cases were further decreased and increased in NaCl and urea solutions respectively as compared with the aqueous system. Numerous micellar, interfacial, and thermodynamic parameters have been measured by applying various theoretical models. The obtained changes in the physicochemical assets of AMT upon adding of 14-E2-14 are likely to enhance the industrial and pharmaceutical applications of gemini surfactants. The negative interaction parameters (βm and βσ), indicate synergistic attraction is occurring in the mixed systems. The aggregation number (Nagg), Stern–Volmer constant (Ksv), etc. are attained through the fluorescence method, also supporting the attractive interaction behavior of AMT+14-E2-14 mixtures in all solvents. The Nagg was found to increase in the salt solution and decrease in the urea system compared with the aqueous solution. FT-IR and UV-visible analysis also depict the interaction between the constituent alike tensiometry and fluorimetry methods. The results suggested that gemini surfactants may serve as a capable drug delivery agent for antidepressants, improving their bioavailability.

APA, Harvard, Vancouver, ISO, and other styles

28

Nishikido, Nagamune. "Thermodynamic equations expressing the synergistic solubilization effect by surfactant mixtures." Langmuir 7, no. 10 (October 1991): 2076–82. http://dx.doi.org/10.1021/la00058a019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Szumała, Patrycja, and Alicja Mówińska. "Perfectly Wetting Mixtures of Surfactants from Renewable Resources: The Interaction and Synergistic Effects on Adsorption and Micellization." Journal of Surfactants and Detergents 19, no. 3 (February 13, 2016): 437–45. http://dx.doi.org/10.1007/s11743-016-1793-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Xu, Ke, Peixi Zhu, Tatiana Colon, Chun Huh, and Matthew Balhoff. "A Microfluidic Investigation of the Synergistic Effect of Nanoparticles and Surfactants in Macro-Emulsion-Based Enhanced Oil Recovery." SPE Journal 22, no. 02 (September 23, 2016): 459–69. http://dx.doi.org/10.2118/179691-pa.

Full text

Abstract:

Summary Injecting oil-in-water (O/W) emulsions stabilized with nanoparticles (NPs) or surfactants is a promising option for enhanced oil recovery (EOR) in harsh-condition reservoirs. Stability and rheology of the flowing emulsion in porous media are key factors for the effectiveness of the EOR method. The objective of this study is to use microfluidics to (1) quantitatively evaluate the synergistic effect of surfactants and NPs on emulsion dynamic stability and how NPs affect the emulsion properties, and to (2) investigate how emulsion properties affect the sweep performance in emulsion flooding. A microfluidic device with well-defined channel geometry of a high-permeability pathway and multiple parallel low-permeability pathways was created to represent a fracture/matrix dual-permeability system. Measurement of droplet coalescence frequency during flow is used to quantify the dynamic stability of emulsions. An NP aqueous suspension (2 wt%) shows excellent ability to stabilize the macro-emulsion when mixed with a trace amount of surfactant (0.05 wt%), revealing a synergistic effect between NPs and surfactant. For a stable emulsion, when a pore throat is present in the high-permeability pathway, it was observed that flowing emulsion droplets compress each other and then block the high-permeability pathway at a throat structure, which forces the wetting phase into low-permeability pathways. Droplet size shows little correlation with this blocking effect. Water content was observed to be much higher in the low-permeability pathways than in the high-permeability pathways, indicating different emulsion texture and viscosity in channels of different sizes. Consequently, the assumption of bulk emulsion viscosity in the porous medium is not applicable in the description and modeling of the emulsion-flooding process. Flow of emulsions stabilized by an NP/surfactant mixture shows droplet packing in high-permeability regions that is denser than those stabilized by surfactant only, at high-permeability regions, which is attributed to the enhanced interaction between droplets caused by NPs in the thin liquid film between neighboring oil/water (O/W) interfaces. This effect is shown to enhance the performance of emulsion-blockage effect for sweep-efficiency improvement, showing the advantage of NPs as an emulsion stabilizer during an emulsion-based EOR process.

APA, Harvard, Vancouver, ISO, and other styles

31

Bergström, Magnus. "Synergistic Effects in Mixtures of an Anionic and a Cationic Surfactant." Langmuir 17, no. 4 (February 2001): 993–98. http://dx.doi.org/10.1021/la000814t.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Gordon, V. C., S. Mirhashemi, V. Harutunian, F. Lee, R. Kwee, J. Lin, D. Fong, Y. Ameri, and G. Chawla. "Synergistic and antisynerglstlc effects in mixtures of surfactants, solvents, acids and alkalais on the corrosivity potential of samples." Toxicology Letters 74 (August 1994): 30–31. http://dx.doi.org/10.1016/0378-4274(94)90286-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Trawińska, A., E. Hallmann, and K. Mędrzycka. "Synergistic effects in micellization and surface tension reduction in nonionic gemini S-10 and cationic RTAB surfactants mixtures." Colloids and Surfaces A: Physicochemical and Engineering Aspects 488 (January 2016): 162–72. http://dx.doi.org/10.1016/j.colsurfa.2015.10.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Yang, Xingjian, Guining Lu, Kaibo Huang, Rui Wang, Xingchun Duan, Chen Yang, Hua Yin, and Zhi Dang. "Synergistic solubilization of low-brominated diphenyl ether mixtures in nonionic surfactant micelles." Journal of Molecular Liquids 223 (November 2016): 252–60. http://dx.doi.org/10.1016/j.molliq.2016.07.108.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Coronel-León, Jonathan, Aurora Pinazo, Lourdes Pérez, Mª José Espuny, Ana Mª Marqués, and Angeles Manresa. "Lichenysin-geminal amino acid-based surfactants: Synergistic action of an unconventional antimicrobial mixture." Colloids and Surfaces B: Biointerfaces 149 (January 2017): 38–47. http://dx.doi.org/10.1016/j.colsurfb.2016.10.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Salama, Paul, and Ariel Gliksberg. "The Use of Catalytic Amounts of Selected Cationic Surfactants in the Design of New Synergistic Preservative Solutions." Cosmetics 8, no. 2 (June 20, 2021): 54. http://dx.doi.org/10.3390/cosmetics8020054.

Full text

Abstract:

Preservation using combinations of antibacterial molecules has several advantages, such as reducing the level of usage and broadening their antimicrobial spectrum. More specifically, the use of quaternary ammonium surfactants (QAS)—which are profusely used in hair care products and some are known as efficient antimicrobial agents—is limited due to some potential cytotoxicity concerns. This study shows that the concentration of some widely used cosmetic preservatives can be decreased when combined with very small quantities of QAS, i.e., Polyquaternium-80 (P-80) and/or Didecyldimethylammonium chloride (DDAC). The antimicrobial activity of their mixtures was first evaluated by determining the minimum inhibitory concentration (MIC) before and after the addition of QAS. Following up on this finding and targeting an ultimate consumer friendly antimicrobial blend, yet with optimal safety, we chose to utilize the food-grade preservative Maltol as the main natural origin antimicrobial agent mixed with minimum concentrations of QAS to improve its moderate antimicrobial properties. The preservatives were tested for MIC values, challenge tests and synergy using the fractional inhibitory concentration index (FICI). The antimicrobial efficacy of Maltol was found to be synergistically improved by introducing catalytic amounts of P-80 and/or DDAC.

APA, Harvard, Vancouver, ISO, and other styles

37

Nishikido, Nagamune. "Thermodynamic equations expressing the synergistic solubilization effect by surfactant mixtures. 2. Further information." Langmuir 8, no. 7 (July 1992): 1718–23. http://dx.doi.org/10.1021/la00043a006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Şakar-Deliormanlı, Aylin. "Synergistic effect of polymer-surfactant mixtures on the stability of aqueous silica suspensions." Journal of the European Ceramic Society 27, no. 2-3 (January 2007): 611–18. http://dx.doi.org/10.1016/j.jeurceramsoc.2006.04.117.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Wiertel-Pochopien, Agata, Piotr Batys, Jan Zawala, and Przemyslaw B. Kowalczuk. "Synergistic Effect of Binary Surfactant Mixtures in Two-Phase and Three-Phase Systems." Journal of Physical Chemistry B 125, no. 15 (April 13, 2021): 3855–66. http://dx.doi.org/10.1021/acs.jpcb.1c00664.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

KIHARA, KOJI, NAOKO KITO, and TARO FURUTA. "Synergistic Bactericidal Activity in Binary Mixtures of an Anionic Surfactant and Polyvalent Metal Ions." Biocontrol Science 2, no. 1 (1997): 13–17. http://dx.doi.org/10.4265/bio.2.13.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Zhang, Rui, Yaowen Xing, Yangchao Xia, Fangyu Guo, Shihao Ding, Jinlong Tan, Tao Che, Fancai Meng, and Xiahui Gui. "Synergistic Adsorption Mechanism of Anionic and Cationic Surfactant Mixtures on Low-Rank Coal Flotation." ACS Omega 5, no. 32 (August 5, 2020): 20630–37. http://dx.doi.org/10.1021/acsomega.0c02948.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Zhou, Qiong, and P. Somasundaran. "Synergistic adsorption of mixtures of cationic gemini and nonionic sugar-based surfactant on silica." Journal of Colloid and Interface Science 331, no. 2 (March 2009): 288–94. http://dx.doi.org/10.1016/j.jcis.2008.11.062.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Bergström, L. Magnus, and Tobias Bramer. "Synergistic effects in mixtures of oppositely charged surfactants as calculated from the Poisson–Boltzmann theory: A comparison between theoretical predictions and experiments." Journal of Colloid and Interface Science 322, no. 2 (June 2008): 589–95. http://dx.doi.org/10.1016/j.jcis.2008.02.065.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Geng, Tao, Chunqiao Zhang, Yajie Jiang, Hongbin Ju, and Yakui Wang. "Synergistic effect of binary mixtures contained newly cationic surfactant: Interaction, aggregation behaviors and application properties." Journal of Molecular Liquids 232 (April 2017): 36–44. http://dx.doi.org/10.1016/j.molliq.2017.02.055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Chen, Zhong-Xiu, Shao-Ping Deng, and Xiao-Kui Li. "Micellization and synergistic interaction of binary surfactant mixtures based on sodium nonylphenol polyoxyethylene ether sulfate." Journal of Colloid and Interface Science 318, no. 2 (February 2008): 389–96. http://dx.doi.org/10.1016/j.jcis.2007.09.084.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Qin, Tianzhu, Lamia Goual, and Mohammad Piri. "Synergistic effects of surfactant mixtures on the displacement of nonaqueous phase liquids in porous media." Colloids and Surfaces A: Physicochemical and Engineering Aspects 582 (December 2019): 123885. http://dx.doi.org/10.1016/j.colsurfa.2019.123885.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Trawiſska, A., E. Hallmann, and K. MĿdrzycka. "The effect of alkyl chain length on synergistic effects in micellization and surface tension reduction in nonionic gemini (S-10) and anionic surfactants mixtures." Colloids and Surfaces A: Physicochemical and Engineering Aspects 506 (October 2016): 114–26. http://dx.doi.org/10.1016/j.colsurfa.2016.06.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Liang, Xin, Ming Hui Xiang, Yong Yang, Qi Hua Chen, and Zeng Rong Shu. "The Laboratory Research on Ultra-Low Interfacial Tension Foam Flooding System with High-Temperature and High-Salinity." Applied Mechanics and Materials 71-78 (July 2011): 2163–68. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.2163.

Full text

Abstract:

To obtain the ultra-low interfacial tension foam flooding system for the real reservoir condition of high-temperature and high-salinity, foam properties and dynamic interfacial tension had been performed by Ross-miles test and spin drop tension meter respectively. Ten types of surfactants were screened by foamability, stability and interfacial tension (IFT) at 85°C, high-salinity with 800 mg/L divalent cations and 30000 mg/L total mineralization. The AOS, AESO and 20YB were selected to compose further anion-nonionic mixture system. Due to AOS had excellent foam properties, AESO could achieve low interfacial tension and 20YB could improve the film quality. Through series complex study, the ultra-low interfacial tension (10-4 mN/m order of magnitude) foam system was obtained with the composition of 0.15% wt AOS+0.15% wt AESO+0.11%~0.012% wt 20YB for high-temperature and high-salinity, which V foam was 240-235 mL and t 0.5 was 180-190 min. In addition, the synergistic effect of these surfactants had been described.

APA, Harvard, Vancouver, ISO, and other styles

49

Ejtemaei, Majid, Steven Ramli, Dave Osborne, and Anh V. Nguyen. "Synergistic effects of surfactant-flocculant mixtures on ultrafine coal dewatering and their linkage with interfacial chemistry." Journal of Cleaner Production 232 (September 2019): 953–65. http://dx.doi.org/10.1016/j.jclepro.2019.06.039.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Hou, Baofeng, Ruixiu Jia, Meilong Fu, Yefei Wang, Yu Bai, and Youqing Huang. "Wettability Alteration of an Oil-Wet Sandstone Surface by Synergistic Adsorption/Desorption of Cationic/Nonionic Surfactant Mixtures." Energy & Fuels 32, no. 12 (November 2, 2018): 12462–68. http://dx.doi.org/10.1021/acs.energyfuels.8b03450.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!