A Study of Thin Liquid Films as Related to the Stability of Crude Oil Emulsions

2001 ◽  
Vol 238 (1) ◽  
pp. 177-182 ◽  
Author(s):  
Hongbo Fang ◽  
Lu Zhang ◽  
Lan Luo ◽  
Sui Zhao ◽  
Jingyi An ◽  
...  
Keyword(s):  
Crude Oil ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Oil Emulsions ◽  
The Stability

Film Elasticity and Film Stabilization in Firefighting Foam Stabilized by Solid Particles

2017 ◽  
Vol 744 ◽  
pp. 346-349
Author(s):  
Xiu Juan Li ◽  
Rui Song Guo ◽  
Min Zhao
Keyword(s):  
Life Time ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Solid Particles ◽  
High Concentration ◽  
Hydration Effect ◽  
Fixed Area ◽  
The Stability ◽  
Hydration Layers ◽  
Hydration Forces

The structure of the thin liquid films determines the stability of foams and emulsions. In this work the bubbles stretched length with different hollow SiO2 particles concentration is measured when the foam has been stilled for different time. The results show that the bubbles stretched length is longer than that of bubbles when the foam is free of hollow SiO2 particles even when the foam has been stilled for 500mins. The bubbles stretched length increases with increasing the concentration of hollow SiO2 particles. A strong hydration effect leaves a large volume of hydration layers on the solid particles surfaces in aqueous solutions. The water in hydration layers can help the film keep a certain thickness. The existence of hydration forces leads that two particles cannot be too close each other. The high concentration surfactant limited in the fixed area helps the film keep good elasticity. Therefore the film has a long life time with compatible thickness and elasticity and the three-phrase foam is upper stable.

Statistics of rupture in relation to the stability of thin liquid films with different size

2011 ◽  
Vol 382 (1-3) ◽  
pp. 174-180 ◽  
Author(s):  
Theodor D. Gurkov ◽  
Jana K. Angarska ◽  
Krassimir D. Tachev ◽  
Wolfgang Gaschler
Keyword(s):  
Liquid Films ◽  
Thin Liquid Films ◽  
The Stability

scholarly journals Influence of polymers on the stability of Gudao crude oil emulsions

2008 ◽  
Vol 5 (2) ◽  
pp. 159-162 ◽  
Author(s):  
Meiqin Lin ◽  
Chunling Zhang ◽  
Hua Zong ◽  
Mingyuan Li ◽  
Hongbo Fang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Oil Emulsions ◽  
The Stability

scholarly journals Ion-Specific Effects on Equilibrium Adsorption Layers of Ionic Surfactants

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Stoyan I. Karakashev
Keyword(s):  
Experimental Validation ◽  
Adsorption Layer ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Ionic Surfactant ◽  
Surfactant Adsorption ◽  
Specific Effects ◽  
Counter Ions ◽  
The Stability ◽  
Adsorption Layers

This review article reports on the effect of the counter-ions on the ionic surfactant adsorption layer and its relation to the stability of foams and emulsions. The adsorption theory of Davies about the ionic surfactant monolayer was revisited and it is shown how to account for the type of the counter-ions. The experimental validation of this theory on thin liquid films was shown as well, thus explaining the effect of Hofmeister. However their effect on foams and emulsions is more complex. Furthermore, it is shown how the counter-ions affect in complex way the stability of foams and emulsions via the surfactant adsorption layer in the light of the newest theory. To elucidate the nature of this effect further investigation is called for. 

Role of Surface Forces in the Stability of Evaporating Thin Liquid Films That Contain Surfactant Micelles

1998 ◽  
Vol 198 (2) ◽  
pp. 224-240 ◽  
Author(s):  
Theodor Gurkov ◽  
Krassimir Danov ◽  
Norbert Alleborn ◽  
Hans Raszillier ◽  
Franz Durst
Keyword(s):  
Liquid Films ◽  
Surface Forces ◽  
Thin Liquid Films ◽  
Surfactant Micelles ◽  
The Stability

scholarly journals Malaysian Crude Oil Emulsions : Stability Study

REAKTOR ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 29
Author(s):  
B. Pramudono ◽  
H. B. Mat
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Stability Study ◽  
Active Components ◽  
Oil Emulsion ◽  
Result Show ◽  
Oil Emulsions ◽  
The Stability ◽  
Stability Of Water ◽  
Water In Oil Emulsion

The stability of water-in-oil emulsion of some Malaysian crude oils was studied with particular emphasis on effect of interfacial active components existed in the crude oil, i.e. asphaltene, resin and wax. The emulsion stability was studied by measuring the volume of water or oil phase separated in variation with time, water hold up, and the heights of the sedimenting/coalescing interfaces during the separation at various temperatures. The study investigated the influence of asphaltene, resin and wax on emultion stability if it`s present in the crude oil alone, together or combination one of the others. The result show that the interfacial active component that stabilize emulsion is asphaltene. The resin and wax  do not form stale emulsion either aloneor together. There is a correlation between emulsion stability and physicochemical properties of crude oil which showed that higher asphaltene content in the crude oil would form more stable emultion. Increased temperature was found to cause instability of emultion. Keywords : emultion stability, crude oil, asphaltene, resin and wax

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