Log in

Relevant bibliographies by topics / Non ionic gemini surfactants / Journal articles

Journal articles on the topic 'Non ionic gemini surfactants'

To see the other types of publications on this topic, follow the link: Non ionic gemini surfactants.

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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 'Non ionic gemini 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

Singh, Nirmal, and Lalit Sharma. "Synthesis of Carbohydrate Derived Non-ionic Gemini Surfactants and Study of Their Micellar and Reverse Micellar Behavior - A Review." Letters in Organic Chemistry 16, no. 8 (June 18, 2019): 607–14. http://dx.doi.org/10.2174/1570178616666190123124727.

Full text

Abstract:

Gemini surfactants (gemini) are a distinct class of amphiphiles having more than one hydrophobic tail and hydrophilic head group connected via a spacer. These surfactants usually have better surface active properties than corresponding conventional surfactant of equal chain length. Depending upon the nature of charge on head group, these geminis may be cationic or anionic. If there is no charge on head group, the geminis are termed as non-ionic. Carbohydrate derived gemini surfactants carry sugar moiety linked with each of the conventional surfactants, which are further connected by spacer. The sugar moiety was found to enhance the aggregation tendencies. Moreover, due to the presence of sugar moiety, these surfactants are non-toxic and biodegradable. Due to chiral nature of sugar moiety, these surfactants can be used for chiral recognition of some chiral drugs in order to improve their aqueous solubility. Non-ionic surfactants are more important than ionic surfactants as in the latter case, due to repulsion among the same charged head group, aggregation does not take place readily. However, in case of non-ionic surfactants, the head group carries no charge, so there is no repulsion, thus micelle forms easily and at low concentration. The only repulsive forces among head groups are due to hydration shell formed by solvent molecules.

APA, Harvard, Vancouver, ISO, and other styles

2

Wang, Ruiguo, Xinxin Xu, Xiaodi Shi, Junjie Kou, Hongjian Song, Yuxiu Liu, Jingjing Zhang, and Qingmin Wang. "Promoting Efficacy and Environmental Safety of Pesticide Synergists via Non-Ionic Gemini Surfactants with Short Fluorocarbon Chains." Molecules 27, no. 19 (October 10, 2022): 6753. http://dx.doi.org/10.3390/molecules27196753.

Full text

Abstract:

Improving the utilization rate of pesticides is key to achieve a reduction and synergism, and adding appropriate surfactant to pesticide preparation is an effective way to improve pesticide utilization. Fluorinated surfactants have excellent surface activity, thermal and chemical stability, but long-chain linear perfluoroalkyl derivatives are highly toxic, obvious persistence and high bioaccumulation in the environment. Therefore, new strategies for designing fluorinated surfactants which combine excellent surface activity and environmental safety would be useful. In this study, four non-ionic gemini surfactants with short fluorocarbon chains were synthesized. The surface activities of the resulting surfactants were assessed on the basis of equilibrium surface tension, dynamic surface tension, and contact angle. Compared with their monomeric counterparts, the gemini surfactants had markedly lower critical micelle concentrations and higher diffusivities, as well as better wetting abilities. We selected a single-chain surfactant and a gemini surfactant with good surface activities as synergists for the glyphosate water agent. Both surfactants clearly improved the efficacy of the herbicide, but the gemini surfactant had a significantly greater effect than the single-chain surfactant. An acute toxicity test indicated that the gemini surfactant showed slight toxicity to rats.

APA, Harvard, Vancouver, ISO, and other styles

3

Tang, Shan Fa, Xiao Dong Hu, Xiang Nan Ouyang, Shuang Xi Yan, Shou Cheng Wen, and Yan Ling Lai. "Experimental Study of Anionic Gemini Surfactant Enhancing Waterflooding Recovery Ratio." Advanced Materials Research 361-363 (October 2011): 469–72. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.469.

Full text

Abstract:

The oil-water interfacial tension measurement and enhancing water displacement recovery experiment were carried out, and the effects of various parameters such as category of surfactants, anionic Gemini surfactant concentration, water medium salinity, core permeability, polymer and non-ionic surfactant on anionic Gemini surfactants enhancing water displacement recovery were investigated in detail. The results show that surfactants category is different, its enhancing water flooding recovery efficiency is different, and effect of enhanced oil recovery is consistent with surfactant ability to reduce oil-water interfacial tension. The anionic Gemini surfactant AN12-4-12 is the best in enhancing water flooding recovery efficiency, because it can reduce the oil-water interfacial tension to 5×10-3 mN•m-1. Increasing the concentration of AN12-4-12 is favorable to enhance water displacement recovery. Such as when injecting 0.5PV solution containing 800mg•L-1 AN12-4-12, enhancing water displacement recovery is 11.67%. AN12-4-12 has good adaptability to different salinities (5~25×104 mg•L-1) and low permeability reservoir in improving water displacement recovery. Adding non-ionic surfactant ANT into AN12-4-12 solution can further reduce oil-water interfacial tension and enhance water flooding recovery efficiency. For example, injecting 0.5PV surfactant solution containing 400mg•L-1 AN12-4-12 and 100mg•L-1 can enhance water displacement recovery of 10.7%.

APA, Harvard, Vancouver, ISO, and other styles

4

Saroj and Lalit Sharma. "Carbohydrate Derived Non-ionic Gemini Surfactants: A Mini Review." Mini-Reviews in Organic Chemistry 15, no. 5 (August 1, 2018): 404–11. http://dx.doi.org/10.2174/1570193x15666180108153502.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Yi, Mengjiao, Ping Qi, Qi Fan, and Jingcheng Hao. "Ionic liquid crystals based on amino acids and gemini surfactants: tunable phase structure, circularly polarized luminescence and emission color." Journal of Materials Chemistry C 10, no. 5 (2022): 1645–52. http://dx.doi.org/10.1039/d1tc05265a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Koziróg, Anna, Anna Otlewska, Magdalena Gapińska, and Sylwia Michlewska. "Influence of Gemini Surfactants on Biochemical Profile and Ultrastructure of Aspergillus brasiliensis." Applied Sciences 9, no. 2 (January 10, 2019): 245. http://dx.doi.org/10.3390/app9020245.

Full text

Abstract:

In this study, we investigated the activities of hexamethylene-1,6-bis-(N,N-dimethyl-N-dodecylammonium bromide) (C6), pentamethylene-1,5-bis-(N,N-dimethyl-N-dodecylammonium bromide) (C5), and their two neutral analogues: hexamethylene-1,6-bis-(N-methyl-N-dodecylamine) (A6) and pentamethylene-1,5-bis-(N-methyl-N-dodecylamine) (A5) at concentrations of ½ MIC, MIC, and 2 MIC (minimal inhibitory concentration) against hyphal forms of Aspergillus brasiliensis ATCC 16404. Enzymatic profiles were determined using the API-ZYM system. Extracellular proteins were extracted from the mycelia and analyzed using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The ultrastructure was evaluated using a transmission electron microscope (TEM). Both groups of surfactants caused changes in the enzyme profiles. Larger changes in the number and concentration of enzymes were noted after the action of non-ionic gemini surfactants, which may have been due to the 100× higher concentration of neutral compounds. Larger differences between the protein profiles of the control sample and the biocide samples were observed following the use of cationic compounds. On the basis of TEM analyses, we found that, with increasing concentrations of compound C6, the mycelium cells gradually degraded. After treatment at 2 MIC, only membranous structures, multiform bodies, and dense electron pellets remained. Based on these results, we concluded that cationic gemini surfactants, in comparison with their non-ionic analogues, could have a wide range of practical applications as active compounds.

APA, Harvard, Vancouver, ISO, and other styles

7

Sharma, Lalit, Saroj, and Nirmal Singh. "Micellar Encapsulation of Some Polycyclic Aromatic Hydrocarbons by Glucose Derived Non-Ionic Gemini Surfactants in Aqueous Medium." Tenside Surfactants Detergents 51, no. 5 (September 15, 2014): 441–44. http://dx.doi.org/10.3139/113.110327.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Pal, Nilanjan, Krishanu Samanta, and Ajay Mandal. "A novel family of non-ionic gemini surfactants derived from sunflower oil: Synthesis, characterization and physicochemical evaluation." Journal of Molecular Liquids 275 (February 2019): 638–53. http://dx.doi.org/10.1016/j.molliq.2018.11.111.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Gawali, Ishwar T., and Ghayas A. Usmani. "Novel Non-ionic Gemini Surfactants from Fatty Acid and Diethanolamine: Synthesis, Surface-Active Properties and Anticorrosion Study." Chemistry Africa 3, no. 1 (December 9, 2019): 75–88. http://dx.doi.org/10.1007/s42250-019-00107-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Sanchez Garrido, Rolando Abraham, Araceli ESPINOZA Vazquez, Clarisa Campechano-Lira, Edna Vázquez Vélez, Alejandra Vázquez Márquez, Ricardo Orozco Cruz, R. Galván Martínez, and Andrés Carmona-Hernandez. "Evaluation of a Non-Ionic Gemini Surfactant as Sweet Corrosion Inhibitor for X100 Steel in Sweet Brine Solution." ECS Transactions 110, no. 1 (February 13, 2023): 141–47. http://dx.doi.org/10.1149/11001.0141ecst.

Full text

Abstract:

In the present research work, the evaluation of a non-ionic gemini surfactant derived from palm oil named bis(2-((2-palmitoamidoethyl) amino) ethyl) 1H-imidazole-4,5-dicarboxylate as an ecological corrosion inhibitor of X100 steel immersed in NaCl solution at 3.5% saturated with carbon dioxide (CO2) was analyzed. The electrochemical tests performed by Polarization Curves (PC) and Electrochemical Impedance Spectroscopy (EIS) showed that the efficiency of the inhibitor increased according to the increase in the concentration of the inhibitor. Likewise, the EIS results showed that the inhibitor performance increased as the exposure time elapsed.

APA, Harvard, Vancouver, ISO, and other styles

11

Singh, Nirmal, and Lalit Sharma. "Synthesis, Characteristics and Application of Novel Non-Ionic Gemini Surfactants as Reverse Micellar Systems for Encapsulation of Some Aromatic α-Amino Acids in n-Hexane." Tenside Surfactants Detergents 57, no. 3 (May 15, 2020): 247–51. http://dx.doi.org/10.3139/113.110682.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Misra, Pramila K., Sagarika Panigrahi, Uma Dash, and Asit Baran Mandal. "Organization of amphiphiles. Part XI: Physico-chemical aspects of mixed micellization involving normal conventional surfactant and a non-ionic gemini surfactant." Journal of Colloid and Interface Science 345, no. 2 (May 2010): 392–401. http://dx.doi.org/10.1016/j.jcis.2010.01.066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Cabana Saavedra, L. Catalina, Erica M. Pachón Gómez, Rafael G. Oliveira, and Mariana A. Fernández. "Aggregation behaviour and solubilization capability of mixed micellar systems formed by a gemini lipoamino acid and a non-ionic surfactant." Colloids and Surfaces A: Physicochemical and Engineering Aspects 533 (November 2017): 41–47. http://dx.doi.org/10.1016/j.colsurfa.2017.08.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Carmona-Hernandez, Andrés, A. Contreras, Jorge Uruchurtu Chavarín, Jose Gonzalo Gonzalez Rodriguez, Ricardo Orozco Cruz, and R. Galván Martínez. "Electrochemical Noise of SCC Inhibition of a Supermartensitic Stainless Steel in Sour Solution." ECS Transactions 110, no. 1 (February 13, 2023): 29–37. http://dx.doi.org/10.1149/11001.0029ecst.

Full text

Abstract:

In this work, the inhibition effect of a non-ionic gemini surfactant, named bis(2-((2-palmitoamidoethyl)amino)ethyl)1H-imidazole4,5-dicarboxylate, on the stress corrosion cracking (SCC) behavior of a supermartensitic stainless steel (SMSS) was studied in sour environment. The slow strain rate stress tests (SSRT) results and fractographic analysis revealed that the corrosion inhibitor was able to inhibit the SCC process using a concentration above than 5ppm. At concentrations of 0 and 5 ppm, the steel showed a brittle fracture with susceptibility to SCC, whereas at concentrations of 25 and 100 ppm, the fracture was ductile, and the steel was practically immune to SCC. The EN measurements showed transients associated with pits and microcracks, which were confirmed by SEM examination. The EN analysis using the shot noise theory indicated that localized corrosion was the dominant corrosion process at the concentrations of inhibitor in which the SMSS was susceptible to SCC.

APA, Harvard, Vancouver, ISO, and other styles

15

Sharma, Lalit, Saroj, and Nirmal Singh. "Reverse Micellar Encapsulation of d- and l-Enantiomers of Some Aromatic α-Amino Acids and Nucleobases by Glucose-Derived Non-ionic Gemini Surfactants in Neat n-Hexane." Journal of Surfactants and Detergents 18, no. 1 (June 4, 2014): 33–39. http://dx.doi.org/10.1007/s11743-014-1595-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Sharma, Lalit, and Saroj. "Novel glucose derived non-ionic gemini surfactants as reverse micellar systems for encapsulation of d- and l-enantiomers of some aromatic α-amino acids in n-hexane." Journal of Inclusion Phenomena and Macrocyclic Chemistry 74, no. 1-4 (January 28, 2012): 251–56. http://dx.doi.org/10.1007/s10847-012-0107-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Saroj and Lalit Sharma. "Influence of Nature of Spacer and Hydrocarbon Chain Length on Micellar Encapsulation of Polynuclear Aromatic Hydrocarbons by Carbohydrate Derived Non‐Ionic Gemini Surfactants in Aqueous Ethanol Medium." Journal of Surfactants and Detergents 23, no. 6 (July 13, 2020): 1079–85. http://dx.doi.org/10.1002/jsde.12446.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Alam, Md Sayem, V. Nareshkumar, N. Vijayakumar, K. Madhavan, and Asit Baran Mandal. "Effect of additives on the cloud point of mixed surfactant (non-ionic Triton X-114+cationic gemini 16-6-16) solutions." Journal of Molecular Liquids 194 (June 2014): 206–11. http://dx.doi.org/10.1016/j.molliq.2014.02.042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Páhi, Annamária B., Zoltán Király, and Sándor Puskás. "Mass spectrometric characterization of the non-ionic gemini surfactant Surfynol 465 and a microcalorimetric study of its micelle formation in water." Colloids and Surfaces A: Physicochemical and Engineering Aspects 345, no. 1-3 (August 2009): 13–17. http://dx.doi.org/10.1016/j.colsurfa.2009.05.009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Dabiri, Abdolreza, and Bizhan Honarvar. "Investigation of Interfacial Tension Reduction, Wettability Alteration, and Oil Recovery Using a New Non‐ionic Oil‐Based Surfactant from Gemini Surfactants Family Coupled with Low‐Salinity Water: Experimental Study on Oil‐Wet Carbonate Rock." Journal of Surfactants and Detergents 23, no. 4 (February 24, 2020): 821–29. http://dx.doi.org/10.1002/jsde.12400.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Singh, Nirmal, and Lalit Sharma. "Novel Carbohydrate Based Non-Ionic Gemini Surfactants with Flexible Spacer as Reverse Micellar Systems for Encapsulation of D- and L-Enantiomers of Some Aromatic α-Amino Acids inn-Hexane." Tenside Surfactants Detergents 55, no. 3 (May 14, 2018): 220–25. http://dx.doi.org/10.3139/113.110561.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Guo, Yong-jun, Jian-xin Liu, Xin-ming Zhang, Ru-sen Feng, Hua-bin Li, Jian Zhang, Xing Lv, and Ping-ya Luo. "Solution Property Investigation of Combination Flooding Systems Consisting of Gemini–Non-ionic Mixed Surfactant and Hydrophobically Associating Polyacrylamide for Enhanced Oil Recovery." Energy & Fuels 26, no. 4 (March 27, 2012): 2116–23. http://dx.doi.org/10.1021/ef202005p.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Cruz-Zabalegui, A., E. Vazquez-Velez, G. Galicia-Aguilar, M. Casales-Diaz, R. Lopez-Sesenes, J. G. Gonzalez-Rodriguez, and L. Martinez-Gomez. "Use of a non-ionic gemini-surfactant synthesized from the wasted avocado oil as a CO2- corrosion inhibitor for X-52 steel." Industrial Crops and Products 133 (July 2019): 203–11. http://dx.doi.org/10.1016/j.indcrop.2019.03.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Sayem Alam, Md, and Asit Baran Mandal. "The clouding phenomena of mixed surfactant (non-ionic Triton X-114 + cationic gemini 16-5-16) solutions: Influence of inorganic and organic additives on the cloud point." Journal of Molecular Liquids 212 (December 2015): 237–44. http://dx.doi.org/10.1016/j.molliq.2015.08.051.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Sun, Yuhai, Yujun Feng, Hongwei Dong, Zhi Chen, and Likun Han. "Synthesis and aqueous solution properties of homologous gemini surfactants with different head groups." Open Chemistry 5, no. 2 (June 1, 2007): 620–34. http://dx.doi.org/10.2478/s11532-006-0072-7.

Full text

Abstract:

AbstractA series of homologous gemini surfactants possessing identical hydrophobic chains but different ionic head groups (cationic, anionic, zwitterionic) were synthesized, and their aqueous solution properties were examined. The results showed that the surface activities of gemini surfactants are superior to those of corresponding conventional monomeric surfactants, and molecular arrangements of gemini surfactants at the air-water interface are tighter than those of corresponding conventional surfactants. It was also found that zwitterionic gemini surfactant possesses the highest surface activity among the three surfactants. The behavior at the air-water interface is closely related to the molecular structural features of surfactants, which provide an indication for synthesizing highly-efficient surfactants.

APA, Harvard, Vancouver, ISO, and other styles

26

Kumar, A., E. Alami, K. Holmberg, V. Seredyuk, and F. M. Menger. "Branched zwitterionic gemini surfactants micellization and interaction with ionic surfactants." Colloids and Surfaces A: Physicochemical and Engineering Aspects 228, no. 1-3 (November 2003): 197–207. http://dx.doi.org/10.1016/s0927-7757(03)00300-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Hubčík, L., P. Pullmannová, S. S. Funari, F. Devínsky, and D. Uhríková. "DNA – DOPC – gemini surfactants complexes: effect of ionic strength." Acta Facultatis Pharmaceuticae Universitatis Comenianae 61, no. 2 (December 30, 2014): 26–34. http://dx.doi.org/10.2478/afpuc-2014-0013.

Full text

Abstract:

AbstractThe effect of ionic strength on DNA condensation by cationic liposomes prepared as a mixture of ethane-1,2-diylbis(dodecyl-dimethylammonium bromide) (C2GS12) and dioleoylphosphatidylcholine (DOPC) was studied using fluorescence spectroscopy. The DNA condensation followed by changes in emission intensity of ethidium bromide shows a strong dependence on the ionic strength of the solution. At physiologically relevant ionic strength (0.15 mol/l NaCl), the amount of DNA condensed between lipid bilayers is approximately 40% lower compared to 0.005 mol/l NaCl. The structure of formed complexes was studied using small angle X-ray diffraction (SAXD). DNA–C2GS12–DOPC complexes form a condensed lamellar phase organisation, which is partially disrupted by the increase of ionic strength. Both the lamellar repeat distance and DNA–DNA distance show dependence on C2GS12/DOPC molar ratio, temperature and also on ionic strength. We found that the method of preparation significantly affects both the quality of organisation and the structural parameters of complexes as discussed in the paper.

APA, Harvard, Vancouver, ISO, and other styles

28

Lei, Lan, Lin Feng, Binglei Song, Zhaolan Zhai, Shibin Shang, and Zhanqian Song. "Ionic liquid crystals with novel thermal properties formed by the gemini surfactants containing four hydroxyl groups." RSC Advances 6, no. 101 (2016): 99361–66. http://dx.doi.org/10.1039/c6ra23235c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Ao, Mingqi, Guiying Xu, Yanyan Zhu, and Yan Bai. "Synthesis and properties of ionic liquid-type Gemini imidazolium surfactants." Journal of Colloid and Interface Science 326, no. 2 (October 2008): 490–95. http://dx.doi.org/10.1016/j.jcis.2008.06.048.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Yang, Xuzhao, Yarong Bai, Qing Li, and Jun Wang. "Preparation and Adsorption Properties of MCM-41 with Novel Gemini Ionic Liquid Surfactants as Template." Materials 15, no. 8 (April 10, 2022): 2780. http://dx.doi.org/10.3390/ma15082780.

Full text

Abstract:

A mesoporous molecular sieve was prepared by the hydrothermal synthesis method with symmetric Gemini surfactant 1,3-bis(hexadecyldimethylammonio)-propane dibromide, symmetric Gemini ionic liquid surfactant 1,3-bis(3-hexadecylimidazolium-1-yl) propane dibromide and self-designed asymmetric Gemini ionic liquid surfactant 1-(3-(hexadecyldimethylammonio)prop-1-yl)-3-hexadecylimidazolium dibromide as the template agent. The structure characterization results for mesoporous molecular sieves show that the material possesses a hexagonal pore structure with uniform channels. The mesoporous silica that was synthesized with self-designed asymmetric Gemini ionic liquid surfactant as the template agent possesses the largest surface area and its pore size and specific surface area are, respectively, 3.28 nm and 879.37 m2/g. The adsorption properties of the prepared MCM-41 for crystal violet were investigated, and the adsorption thermodynamics and kinetics were investigated. The results show that adsorption equilibrium can be reached under pH = 9 and 35 °C for 50 min, and the quantity of adsorption can reach up to 464.21 mg/g. The adsorption process belongs to Langmuir isothermal adsorption, conforming to second-order adsorption kinetics, and the adsorption process is an endothermic process.

APA, Harvard, Vancouver, ISO, and other styles

31

Suryawanshi, Reena, Manoj Kumar Banjare, Kamalakanta Behera, Ramesh Kumar Banjare, Reshma Sahu, Arijit Saha, Siddharth Pandey, Subhash Banerjee, and Kallol Kumar Ghosh. "Interaction of an Acid Functionalized Magnetic Ionic Liquid with Gemini Surfactants." Journal of Solution Chemistry 49, no. 5 (May 2020): 715–31. http://dx.doi.org/10.1007/s10953-020-00990-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Yan, Lu, and Fan Ping. "Synthesis and Study of 4, 4-12-12 Alkyl Phenol Polyoxyethylene Sulfonate Gemini Surfactant." Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) 12, no. 4 (October 28, 2019): 262–74. http://dx.doi.org/10.2174/2405520412666190723112325.

Full text

Abstract:

Background: Gemini surfactants have good prospect of application development in various fields for their superior performance in foaming, wettability, and emulsification with lower critical micelle concentration (CMC) than conventional mono-surfactants. Objective: The purpose of this study was to synthesize an ionic sulfonate Gemini surfactant, which is mainly used as an oil flooding agent, to improve oil recovery and reduce oil production cost. Methods: With 4-dodecyl phenol, diethylene glycol and triethylene glycol as the raw materials to synthesize two sulfonate Gemini surfactants. The single factor experiment combined with Box-Behnken center composite experimental design, the optimum reaction conditions were determined. The optimal reaction condition of sulfonation was determined by orthogonal test. The product structure was characterized by nuclear magnetic resonance and infrared. Results: The mass fraction of sodium hydroxide ω(NaOH), temperature and the quality ratio of hexadecyl trimethyl ammonium bromide to dodecyl phenol were 18%, 93.5°C and 14.2%, respectively. Under the condition of ice bath, the molar ratio of chlorosulfonic acid to 4, 4- 12-12 alkyl phenol polyoxyethylene ether was 2.02:1 and reaction for 5h. The critical micelle concentration was determined to be 2×10-4, 1.05×10-4, respectively. Conclusion: Two sulfonate Gemini surfactants, namely 5, 5-dilauryl alkyl-2,2'-(diethylene glycol oxygen base) sodium diphenyl sulfonate and 5,5-dilauryl alkyl-2,2'-(triethylene glycol oxygen base) sodium diphenyl sulfonate (recorded as III and IV, respectively) were synthesized. The synthesized surfactants have excellent emulsification ability.

APA, Harvard, Vancouver, ISO, and other styles

33

Vidal, F., and T. Hamaide. "Non-ionic thiol-ended surfactants." Polymer Bulletin 35, no. 1-2 (1995): 1–7. http://dx.doi.org/10.1007/bf00312887.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Li, Hongqi, Chaochao Yu, Rui Chen, Juan Li, and Jinxing Li. "Novel ionic liquid-type Gemini surfactants: Synthesis, surface property and antimicrobial activity." Colloids and Surfaces A: Physicochemical and Engineering Aspects 395 (February 2012): 116–24. http://dx.doi.org/10.1016/j.colsurfa.2011.12.014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Mefford, Ivan N. "Modification of reversed-phase separations of small molecules using non-ionic surfactants and mixed ionic- non-ionic surfactants." Journal of Chromatography A 368 (January 1986): 31–37. http://dx.doi.org/10.1016/s0021-9673(00)91044-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Silva, Sandra G., Isabel S. Oliveira, M. Luísa C. do Vale, and Eduardo F. Marques. "Serine-based gemini surfactants with different spacer linkages: from self-assembly to DNA compaction." Soft Matter 10, no. 46 (2014): 9352–61. http://dx.doi.org/10.1039/c4sm01771d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Karakashev, Stoyan I., and Dilyana S. Ivanova. "Thin liquid film drainage: Ionic vs. non-ionic surfactants." Journal of Colloid and Interface Science 343, no. 2 (March 2010): 584–93. http://dx.doi.org/10.1016/j.jcis.2009.11.065.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Liu, Guoyu, Daming Gu, Haiyan Liu, Wei Ding, Tao Yu, and Jiecheng Cheng. "Molecular Dynamics Simulation of Ionic Liquid-type Gemini Imidazolium Surfactants in Aqueous Solutions." Acta Chimica Sinica 70, no. 1 (2012): 6. http://dx.doi.org/10.6023/a1105252.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Pullmannová, Petra, Margarida Bastos, Guangyue Bai, Sergio S. Funari, Ivan Lacko, Ferdinand Devínsky, José Teixeira, and Daniela Uhríková. "The ionic strength effect on the DNA complexation by DOPC — gemini surfactants liposomes." Biophysical Chemistry 160, no. 1 (January 2012): 35–45. http://dx.doi.org/10.1016/j.bpc.2011.09.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Rashmi, Abhishek K. Singh, Katharina Achazi, Svenja Ehrmann, Christoph Böttcher, Rainer Haag, and Sunil K. Sharma. "Stimuli-responsive non-ionic Gemini amphiphiles for drug delivery applications." Polymer Chemistry 11, no. 42 (2020): 6772–82. http://dx.doi.org/10.1039/d0py01040e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Ribosa, I., M. T. Garcia, J. Sanchez Leal, and J. J. Gonzalez. "Pphotobacterium phosphoreumtest data of non‐ionic surfactants." Toxicological & Environmental Chemistry 39, no. 3-4 (December 1993): 237–41. http://dx.doi.org/10.1080/02772249309357922.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Al-Assadi, Hassan M. T., A. J. Baillie, and A. T. Florence. "THE HAEMOLYTIC ACTIVITY OF NON-IONIC SURFACTANTS." Journal of Pharmacy and Pharmacology 42, S1 (December 1990): 161P. http://dx.doi.org/10.1111/j.2042-7158.1990.tb14534.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Levitz, Pierre E. "Non-ionic surfactants adsorption: structure and thermodynamics." Comptes Rendus Geoscience 334, no. 9 (January 2002): 665–73. http://dx.doi.org/10.1016/s1631-0713(02)01806-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Milano-Brusco, J. S., M. Schwarze, and R. Schomäcker. "Non-ionic Surfactants Applied in Catalytic Hydrogenations." Chemie Ingenieur Technik 80, no. 9 (September 2008): 1265. http://dx.doi.org/10.1002/cite.200750524.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

LIU, Z., D. EDWARDS, and R. LUTHY. "Sorption of non-ionic surfactants onto soil." Water Research 26, no. 10 (October 1992): 1337–45. http://dx.doi.org/10.1016/0043-1354(92)90128-q.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Ríos, Francisco, Alejandro Fernández-Arteaga, Manuela Lechuga, and Mercedes Fernández-Serrano. "Ecotoxicological characterization of polyoxyethylene glycerol ester non-ionic surfactants and their mixtures with anionic and non-ionic surfactants." Environmental Science and Pollution Research 24, no. 11 (March 3, 2017): 10121–30. http://dx.doi.org/10.1007/s11356-017-8662-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Wang, Xudong, Xiao Chen, Yurong Zhao, Xiu Yue, Qiuhong Li, and Zhihong Li. "Nonaqueous Lyotropic Liquid-Crystalline Phases Formed by Gemini Surfactants in a Protic Ionic Liquid." Langmuir 28, no. 5 (January 18, 2012): 2476–84. http://dx.doi.org/10.1021/la204489v.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Ma, Qing-Yu, Rui-Fang Guan, and Guo-Zhong Li. "Synthesis of gold nanostructures using Langmuir monolayers of ionic liquid-type Gemini imidazolium surfactants." Micro & Nano Letters 6, no. 6 (2011): 454. http://dx.doi.org/10.1049/mnl.2011.0165.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Kumar, E. Kiran, and N. Prakash Prabhu. "Differential effects of ionic and non-ionic surfactants on lysozyme fibrillation." Phys. Chem. Chem. Phys. 16, no. 43 (2014): 24076–88. http://dx.doi.org/10.1039/c4cp02423k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Biswal, Sudershan, P. N. Murthy, J. Sahu, P. Sahoo, and Amir F. "Vesicles of Non-ionic Surfactants (Niosomes) and Drug Delivery Potential." International Journal of Pharmaceutical Sciences and Nanotechnology 1, no. 1 (May 31, 2008): 1–8. http://dx.doi.org/10.37285/ijpsn.2008.1.1.1.

Full text

Abstract:

Vesicles prepared from self-assembly of hydrated non-ionic surfactants molecules are called niosomes. These types of vesicles were first reported in the cosmetic industries. Niosomes exhibit more chemical stability than liposomes (a phospholipids vesicle) as non-ionic surfactants are more stable than phospholipids. Non-ionic surfactants used in formation of niosomes are polyglyceryl alkyl ether, glucosyldialkyl ether, crown ether, polyoxyethylenealkyl ether, ester-linked surfactants, and steroid-linked surfactants and a spans, and tweens series. Niosomes preparation is affected by processes variables, nature of surfactants, and presence of membrane additives and nature of drug to be encapsulated. This review article presents an overview of theoretical concept of factors affecting niosome formation, techniques of noisome preparation, characterization of niosome, applications, limitations and market status of such delivery system.

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!