Effect of a Hydrophilic Head Group on Krafft Temperature, Surface Activities and Rheological Behaviors of Erucyl Amidobetaines

Wang, Yuejiao; Zhang, Yongmin; Liu, Xingli; Wang, Jiyu; Wei, Limin; Feng, Yujun

doi:10.1007/s11743-013-1496-7

Cited by 62 publications

(53 citation statements)

References 21 publications

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“…The Log CMC decreases with the increasing alkyl chain length and the B value was 0.35, which was lower than those of sulfobetaine surfactants C n SB (B ¼ 0.44 or B ¼ 0.48). 32 The hydroxyl group in the spacer group enhances the solubility of hydroxypropyl sulfobetaine, as the hydrophilicity increases through hydrogen bond formation between the hydroxyl group and the water molecules. The difference in molecular structure between C n SB and C n HSB is the spacer groups in the polar group, i.e.…”

Section: Surface Tensionmentioning

confidence: 99%

The structure effect on the surface and interfacial properties of zwitterionic sulfobetaine surfactants for enhanced oil recovery

et al. 2015

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The surface and interfacial properties of five zwitterionic surfactants, including three propyl sulfobetaines CSB (where the carbon atom number of the alkyl chain is 12, 14 and 16, respectively) and two hydroxypropyl sulfobetaine surfactants CHSB (where the carbon atom number of the alkyl chain is 12 and 14, respectively), were studied at both air-water and oil-water interfaces. The surface activity of these surfactants at the air-water interface in aqueous solutions was investigated by the Wilhelmy plate method at 30 C and ambient pressure. The values of the critical micelle concentration (CMC) and surface tension at CMC (g CMC ) were determined from the surface tension measurements. The obtained results indicate that CMC and surface tension strongly depend on the surfactant molecular structure. An increase in the alkyl chain length results in a decrease in the CMC and g CMC values. The presence of a hydroxyl group causes an increase in CMC values and a decrease in g CMC values. The hydroxypropyl sulfobetaine surfactants have better surfacial properties. In addition, the interfacial activity at the oilwater interface among the crude oil-reservoir water-surfactant systems was investigated by use of the spinning drop method under harsh reservoir conditions of high temperature (90 C) and high salinity (11.52 Â 10 4 ppm, including 7040 ppm Ca 2+ and 614 ppm Mg 2+ ). It is interesting that the transient minimum dynamic interfacial tension (DIT min ) could be observed in a specific concentration range. The time to reach DIT min is different with different surfactant molecular structures and surfactant concentrations. The hydroxypropyl sulfobetaine surfactant C 14 HSB shows excellent interfacial properties:it can reduce interfacial tension (IFT) between oil and water to an ultralow level at a very low concentration, and the ultralow IFT phenomenon only occurs in a specific concentration range from 0.03 to 0.10 wt%. In this work, hydroxypropyl sulfobetaine surfactants exhibit remarkable ability and are good candidates for chemical agents to enhance oil recovery in harsh reservoirs.

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Section: Surface Tensionmentioning

confidence: 99%

The structure effect on the surface and interfacial properties of zwitterionic sulfobetaine surfactants for enhanced oil recovery

et al. 2015

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“…According to NMR and FTIR data, both fresh and aged samples of EASB‐1a and EASB‐1b exhibited similar peak patterns, which revealed excellent heat stabilities of the surfactants. We emphasize here the structure analysis of the aged sample of EASB‐1b in DW as an example (Table ) (Wang et al, ). The data for SW and FW is given in supplementary materials (Figures S1‐S6).…”

Section: Resultsmentioning

confidence: 99%

Development of Polyoxyethylene Zwitterionic Surfactants for High‐Salinity High‐Temperature Reservoirs

Kamal

Hussain

Fogang

et al. 2019

J Surfact & Detergents

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Substantial efforts are underway to improve the recovery factor from existing oil reserves to meet the ever‐growing global oil demand. Surfactants are known to increase oil recovery through reducing interfacial tension (IFT) and/or altering the rock wettability. The selection of surfactants for high‐salinity high‐temperature oil fields is a challenging task owing to poor thermal stability, precipitation, and adsorption of surfactants on reservoir rocks. Sulfobetaine‐based polyoxyethylene zwitterionic surfactants have shown excellent thermal and surface properties. However, their solubility in high‐salinity brines becomes poor particularly with a long hydrophobic tail (>C17). Recently, we synthesized such types of surfactants by incorporating ethylene oxide (EO) units into the hydrophobic tail, which improved the solubility in formation water (213,734 ppm) and seawater (SW) (57,643 ppm). In this work, we investigated the IFT, thermal stability, rheological behavior, and foaming properties of two polyoxyethylene zwitterionic surfactants having different degrees of ethoxylation. Aging experiments exhibited excellent thermal stability and no change in the chemical structure was detected. The surfactant with lesser EO units (EASB‐1a) showed a lower IFT compared to the surfactant with higher EO units (EASB‐1b). Rheological studies revealed that the addition of both surfactants reduced the viscosity of the acrylamide copolymer. However, the effect of EASB‐1a was more prominent compared to that of EASB‐1b. The surfactant with a higher degree of ethoxylation showed lower adsorption compared to the surfactant with a lesser degree of ethoxylation. Both surfactants showed excellent foamability and foam stability compared to the commercial surfactants. Excellent thermal stability, water solubility under harsh reservoir conditions, foaming properties, and lower adsorption make them a suitable choice for high‐temperature, high‐salinity reservoirs.

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“…The two methylene carbons directly attached to quaternary nitrogen [-CH 2 -N ? -(CH 3 ) 2 -CH 2 -] appeared at d 62.26 and d 62.83 and amide carbonyl group (-CH 2 -C=O-NH) resonated at d 174.60 [18,23,24].…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization and Surface Properties of Amidosulfobetaine Surfactants Bearing Odd‐Number Hydrophobic Tail

Hussain

Animashaun

Kamal

et al. 2016

J Surfact & Detergents

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Three amidosulfobetaine surfactants were synthesized namely: 3‐(N‐pentadecanamidopropyl‐N,N‐dimethyl ammonium) propanesulfonate (2a); 3‐(N‐heptadecanamidopropyl‐N,N‐dimethyl ammonium) propanesulfonate (2b), and 3‐(N‐nonadecanamidopropyl‐N,N‐dimethyl ammonium) propanesulfonate (2c). These surfactants were prepared by direct amidation of commercially available fatty acids with 3‐(dimethylamino)‐1‐propylamine and subsequent reaction with 1,3‐propanesultone to obtain quaternary ammonium salts. The synthesized surfactants were characterized by IR, NMR and mass spectrometry. Thermogravimetric analysis (TGA) results showed that the synthesized surfactants have excellent thermal stability with no major thermal degradation below 300 °C. The critical micelle concentration (CMC) values of the surfactants 2a and 2b were found to be 2.2 × 10−4 and 1.04 × 10−4 mol/L, and the corresponding surface tension (γCMC) values were 33.14 and 34.89 mN m−1, respectively. The surfactants exhibit excellent surface properties, which are comparable with conventional surfactants. The intrinsic viscosity of surfactant (2b) was studied at various temperatures and concentrations of multi‐component brine solution. The plot of natural logarithm of relative viscosity versus surfactant concentration obtained from Higiro et al. model best fit the surfactant behavior. Due to good salt resistance, excellent surface properties and thermal stability, the synthesized surfactant has potential to be used in various oil field applications such as enhanced oil recovery, fracturing, acid diversion, and well stimulation.

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Effect of a Hydrophilic Head Group on Krafft Temperature, Surface Activities and Rheological Behaviors of Erucyl Amidobetaines

Cited by 62 publications

References 21 publications

The structure effect on the surface and interfacial properties of zwitterionic sulfobetaine surfactants for enhanced oil recovery

The structure effect on the surface and interfacial properties of zwitterionic sulfobetaine surfactants for enhanced oil recovery

Development of Polyoxyethylene Zwitterionic Surfactants for High‐Salinity High‐Temperature Reservoirs

Synthesis, Characterization and Surface Properties of Amidosulfobetaine Surfactants Bearing Odd‐Number Hydrophobic Tail

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