Preparation and evaluation of some amide ether carboxylate surfactants

El-Sukkary, Mohamed M.; Shaker, Nihal; Ismail, Dina A.; Ahmed, Sahar M.; Awad, Ashgan I.

doi:10.1016/j.ejpe.2012.02.002

Cited by 17 publications

(5 citation statements)

References 17 publications

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“…Experimental observations indicate that surfactants with unsaturated alkyl chains induce lower surface/interfacial tension than those with saturated alkyl chains of equivalent chain length. 85,86 To provide a solid scientific basis for those observations, a double bond was added to the middle of the SDS alkyl tail (between carbon numbers 6 and 7), and then the IFT was calculated and correlated to the interfacial film's molecular properties. We expect that adding a double bond to the SDS surfactant tails will increase the disorder of the interfacial film, inspired by the fact that vegetable oils with double bonds in the hydrophobic tails have lower melting temperature than animal fat (with saturated tails) of the same length due to their low chain packing efficiency, 87 thus further reducing the IFT.…”

Section: Temperature Effects On Interfacial Tensionmentioning

confidence: 99%

Water/oil interfacial tension reduction – an interfacial entropy driven process

Bui

Frampton

Huang

et al. 2021

Phys. Chem. Chem. Phys.

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Section: Temperature Effects On Interfacial Tensionmentioning

confidence: 99%

Water/oil interfacial tension reduction – an interfacial entropy driven process

Bui

Frampton

Huang

et al. 2021

Phys. Chem. Chem. Phys.

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“… 21 − 23 Besides, the increase in molecular weight due to the increase of the alkyl chain caused the defoamer to become increasingly effective due to the van der Waals cohesive forces. 24 El-Sukkary et al 25 observed that the foam stability and foam half-life decreased with the increase of alkyl chain length.…”

Section: Resultsmentioning

confidence: 99%

“…The increase in the hydrophobic chain interaction can cause a greater destabilizing effect on the pseudo-emulsion film and accelerates drop-entry or film thinning via subsurface fluid which causes the foam film to rupture more quickly. − Besides, the increase in molecular weight due to the increase of the alkyl chain caused the defoamer to become increasingly effective due to the van der Waals cohesive forces . El-Sukkary et al observed that the foam stability and foam half-life decreased with the increase of alkyl chain length.…”

Section: Resultsmentioning

confidence: 99%

Physio-Chemical Analysis of Amide and Amine Poly(dimethylsiloxane)-Modified Defoamer for Efficient Oil–Water Separation

et al. 2021

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The formation of foam due to the injection of surfactant foam in FAWAG causes significant problems in the oil well production and separation facilities. The excessive foam can lead to the reduction of the separator capacity as well as its efficiency. A defoamer is needed to break and destroy the foam in the separator. There are many commercially available defoamer agents in the market, but not all defoamers are suitable for every application. For this reason, four modified silicone-based defoamers were successfully synthesized and characterized based on the data obtained from the screening process using various commercial defoamers. The performance of modified defoamers was evaluated using TECLIS FoamScan that imitate real conditions of treatment. The results show that all four of the modified silicone-based defoamers, especially amide-terminated-modified defoamers (S2) showed excellent performance as a defoaming agent to mitigate foam in specific conditions. The best-case condition for the modified defoamer to perform was at a high temperature (60 °C), gas flow rate of 1.0 L/min, and low ration concentration of the surfactant to brine (30:70). The study on the bubble count and distribution using a KRÜSS Dynamic Foam Analyzer revealed that S2 excellently contributes to the formation of unstable foam that can fasten foam destruction in the foaming system.

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“…The zone for every particle at the interface permits input about the level of pressing and the course of the adsorbed surfactant particle. The mean zone (in square angstrom) required for every one particle adsorbed on the interface [25] is known through: Amin= 10 16 / Γmax N Amin Minimum surface area in °A2 Γmax Maximum surface excess in mole / cm 2 N Avogadro's number 6.023 x 10 23…”

Section: E) Minimum Surface Area (A Min)mentioning

confidence: 99%

Antimicrobial activity of polymeric surfactants blending with zinc oxide nanoparticles derived from Electric Arc Furnace Dust

et al. 2021

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The biological activities of poly (ethylene glycols) (PEG) that esterified with lauric acid or myristic acid were enhanced by mixing with zinc oxide nanoparticles (ZnO-NPs) derived as of hazardous trash "Electric Arc Furnace Dust (EAFD)" which formed through steel fabrication using sodium hydroxide (NaOH). A diverse temperature was applied to characterize and examine the prepared polymeric surfactants those possess characteristics of surfactant and polymer together. The surface properties were measured and worked out. The hydrodynamic particle diameter normally maximized as the surfactant carbon numbers increased and at blending with ZnO-NPs as exhibited in the dynamic light scattering (DLS) statistics due to aggregation of molecules. The antimicrobial action against different microorganisms of all such designed structures was assessed and assigned. The results plain that, all such engineered nonionic polymeric surfactants possess good surface criteria and biological activity and blending them with ZnO-NPs to obtain polymeric surfactant nanocomposites for enhancing their biological activity against Gram-positive bacteria (Bacillus subtilis and Staph. aureus), Gram-negative bacteria (P. aeruginosa and E. coli), yeast (Candida albicans) and microalga (Chlorella Vulgaris).

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Preparation and evaluation of some amide ether carboxylate surfactants

Cited by 17 publications

References 17 publications

Water/oil interfacial tension reduction – an interfacial entropy driven process

Water/oil interfacial tension reduction – an interfacial entropy driven process

Physio-Chemical Analysis of Amide and Amine Poly(dimethylsiloxane)-Modified Defoamer for Efficient Oil–Water Separation

Antimicrobial activity of polymeric surfactants blending with zinc oxide nanoparticles derived from Electric Arc Furnace Dust

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