scholarly journals Mesoscopic Treatment of a Fluid/Liquid Interface. 2. Air/Water Interfacial Tension

2003 ◽  
Vol 107 (10) ◽  
pp. 1670-1670
Author(s):  
Aly J. Castellanos ◽  
German Urbina-Villalba ◽  
Máximo García-Sucre
Keyword(s):  
Interfacial Tension ◽  
Liquid Interface

scholarly journals Mechanism of active silica nanofluids based on interface-regulated effect during spontaneous imbibition

2021 ◽  
Author(s):  
Xu-Guang Song ◽  
Ming-Wei Zhao ◽  
Cai-Li Dai ◽  
Xin-Ke Wang ◽  
Wen-Jiao Lv
Keyword(s):  
Contact Angle ◽  
Interfacial Tension ◽  
Oil Recovery ◽  
Dynamic Contact Angle ◽  
Liquid Interface ◽  
Spontaneous Imbibition ◽  
Wettability Alteration ◽  
Low Permeability ◽  
Oil Water ◽  
Solid Liquid

AbstractThe ultra-low permeability reservoir is regarded as an important energy source for oil and gas resource development and is attracting more and more attention. In this work, the active silica nanofluids were prepared by modified active silica nanoparticles and surfactant BSSB-12. The dispersion stability tests showed that the hydraulic radius of nanofluids was 58.59 nm and the zeta potential was − 48.39 mV. The active nanofluids can simultaneously regulate liquid–liquid interface and solid–liquid interface. The nanofluids can reduce the oil/water interfacial tension (IFT) from 23.5 to 6.7 mN/m, and the oil/water/solid contact angle was altered from 42° to 145°. The spontaneous imbibition tests showed that the oil recovery of 0.1 wt% active nanofluids was 20.5% and 8.5% higher than that of 3 wt% NaCl solution and 0.1 wt% BSSB-12 solution. Finally, the effects of nanofluids on dynamic contact angle, dynamic interfacial tension and moduli were studied from the adsorption behavior of nanofluids at solid–liquid and liquid–liquid interface. The oil detaching and transporting are completed by synergistic effect of wettability alteration and interfacial tension reduction. The findings of this study can help in better understanding of active nanofluids for EOR in ultra-low permeability reservoirs.

Study on dynamic interfacial tension of 3-dodecyloxy-2-hydroxypropyl trimethyl ammonium bromide at liquid/liquid interface

2008 ◽  
Vol 269 (1-2) ◽  
pp. 93-97 ◽  
Author(s):  
Shizhou Fu ◽  
Wu Zhou ◽  
Zhongni Wang ◽  
Baolin Yin ◽  
Jie Liu ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Liquid Interface ◽  
Ammonium Bromide ◽  
Dynamic Interfacial Tension

Microscopic characteristics of Janus nanoparticles prepared via a grafting-from reaction at the immiscible liquid interface

2020 ◽  
Vol 22 (9) ◽  
pp. 5347-5354
Author(s):  
Bing-Yu Li ◽  
Li Zhao ◽  
Zhong-Yuan Lu
Keyword(s):  
Interfacial Tension ◽  
Monomer Concentration ◽  
Immiscible Liquid ◽  
Liquid Interface ◽  
Reaction Probability ◽  
Initial Monomer Concentration ◽  
Janus Nanoparticles ◽  
Initial Monomer ◽  
Grafting From

The interfacial tension, initial monomer concentration, and reaction probability can greatly influence the microscopic characteristics of the Janus nanoparticle (JNP) structure. The asymmetric initial monomer concentration in solution and the reaction probability can be used to control the syntheses of asymmetric JNPs.

Electrocapillary Curves for the Polarisable Liquid–Liquid Interface in Presence of the Peptide Melittin

2016 ◽  
Vol 230 (11) ◽  
Author(s):  
Ibrahim Uyanik ◽  
Yunus Cengeloglu
Keyword(s):  
Light Scattering ◽  
Interfacial Tension ◽  
Liquid Interface ◽  
Elastic Light Scattering ◽  
Strong Affinity ◽  
Peptide Adsorption

AbstractThe adsorption of the anti-microbial peptide melittin at the polarisable water/1,2-DCE (W–DCE) interface is expected to manifest itself by changes in the interfacial tension. These interfacial tension changes during the peptide adsorption at the interface were measured by a custom-built quasi-elastic light scattering (QELS) setup. Electrocapillary curves obtained for melittin at physiological pH evidences the strong affinity of this peptide for the W–DCE interface. In other words, it is evident that at negative potentials the peptide are readily adsorbed and that at more positive potentials desorption of adsorbed peptide from the interface proceeds leading to an increase of interfacial tension.

Capillarity, wetting, and surface (interfacial) tension

Surfactants ◽  
2019 ◽  
pp. 25-52
Author(s):  
Bob Aveyard
Keyword(s):  
Contact Angle ◽  
Interfacial Tension ◽  
Solid Surface ◽  
Vapour Pressure ◽  
Pressure Difference ◽  
Capillary Tube ◽  
Intermolecular Forces ◽  
Liquid Interface ◽  
Interfacial Tensions ◽  
Drop Radius

Capillarity reflects the action of interfacial tension and has been central to understanding intermolecular forces. When a liquid meets a solid surface (with contact angle θ‎) it forms a meniscus which is associated with the rise/depression of liquid in a capillary tube, hence the term capillarity. Interfacial tensions also determine how a liquid wets and adheres to a solid or another liquid. Liquid menisci are curved, and Young, Laplace, and Kelvin have all thrown light upon the properties of curved liquid surfaces. The Young–Laplace equation relates the pressure difference across a curved liquid interface to both the interfacial tension and curvature of the interface. Interfacial tension also gives rise to a dependence of the vapour pressure (and solubility) of a liquid on the curvature of its surface (e.g. drop radius), as expressed in the Kelvin equation. Common methods for measurement of interfacial tensions are described in an Appendix.

The interaction effects on the adsorption properties of an alternating copolymer chain at liquid–liquid interface

2014 ◽  
Vol 28 (32) ◽  
pp. 1450229
Author(s):  
Z. Khattari ◽  
S. Hamasha
Keyword(s):  
Numerical Methods ◽  
Interfacial Tension ◽  
Diblock Copolymer ◽  
Adsorption Properties ◽  
Liquid Interface ◽  
Mean Square ◽  
Copolymer Chain ◽  
Alternating Copolymer ◽  
End Distance ◽  
Monomer Distribution

Analytical and numerical methods have been combined to investigate the effect of monomers-interfacial interactions on the behavior of a single alternating polymer chain at liquid–liquid interface. The exact Green's function of a Gaussian copolymer chain at attractive penetrable interface has been employed to determine monomer distribution profiles ρ(z), mean-square end-to-end distance 〈R2(z)〉 and the interfacial tension Δγ of the alternating copolymer chain. A comparison between the diblock and alternating copolymer chain is presented. Our model shows that, the alternating copolymer adsorbs more readily than the diblock copolymer at liquid–liquid interface. Also, these copolymers are able to reduce the interfacial tension when presented at the interface.

Mesoscopic Treatment of a Fluid/Liquid Interface. 2. Air/Water Interfacial Tension

2003 ◽  
Vol 107 (6) ◽  
pp. 883-887 ◽  
Author(s):  
Aly J. Castellanos ◽  
German Urbina-Villalba ◽  
Máximo García-Sucre
Keyword(s):  
Interfacial Tension ◽  
Liquid Interface
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