The results showed that the interfacial tension between Dagang crude oil and the Na2CO3/the surfactant/polymer compound system was reduced to ultra - low ( < 10-3 mN/m) in a concentration range of the surfactant 0.1% - 0.3% and a concentration range of Na2CO3 0.6% - 1.2%.
The interface tension between CaO-SiO_2 -TiO_2-Al_2O_3-Mg) system molten slag and the hot metalof Panzhihua Iron and Steel Cempany have been measured with floating drop method. Several prob-lems regarding measuring technique with floating drop method are discussed.
formula Ⅱ: rhamnolipid, conversion agent and cosurfactant concentration ratio is 500∶1∶10.25 Both the formulas can decrease oil water interface tension to 2 × 10 -2 mN/m, and formula Ⅱ can withstand 80℃ of temperature and 20000mg/L of salinity.
HPF has weak interfacial activities and the surface tension of its aqueous solution decreases slightly from 65.31 to 58.22 mN/m and the interfacial tension—from 24.79 to 18.35 mN/m when the solution concentration increasing from 0.1% to 0.6%.
The interfacial tensions for model oil/deionized water and model oil/MDFF agent aqueous solution decrease respectively from 23.4 mN/m and 22.0 mN/m to 20.0 mN/m and 18.8 mN/m when asphaltene mass concentration rises from 0 to 1000 mg/L.
The decrease in the water-oil interfacial tension because of solid particles is experimentally investigated.
Effect of fluid viscosities and interfacial tension on the development of unstable two-phase flow in porous media
Application of Dynamic Thresholding of Video Images for Measuring the Interfacial Tension of Liquids and Contact Angles
This method uses the dynamic thresholding and is applied to the analysis of video images of pendant and sessile drops for determining the interfacial tension of liquids and contact angles.
The effects of physicochemical properties of two-phase liquid systems (interfacial tension and differences in density and viscosity) on the retention of the stationary phase in the column were examined.
This result stems from the very high accuracy of interface tension measurements in the system under study.
Interface tension in a binary system with curved boundary
The equation of interface tension isotherm for a curved boundary in a binary system composed a dispersed particle (α phase) with a curvature radius r and a dispersing medium (β phase) has been obtained from the thermodynamic equilibrium conditions.
Hence the distribution functions can be used to obtain the interface tension between ordered phases.
Also, the interface tension is determined for temperatures belowTc.
Finally, by determining the theoretical works of adhesion and the interfacial tensions from contact angle measurements, it is shown that these parameters are partially able to predict the level of interaction between the fibers and the matrix.
Interfacial tensions of the ternary blends were calculated.
The gap between the measured and calculated liquid-liquid interfacial tensions derived from contact angles
We present our new findings about the causes of discrepancies between the measured and calculated liquid-liquid interfacial tensions derived from contact angles.
In response to recent papers by Kwok et al., we show that the disagreements between the calculated and measured interfacial tensions are definitely not caused by the failure of the VCG approach.