Journal ArticleDOI
Dynamic Surface Properties of Asphaltenes and Resins at the Oil–Air Interface
TLDR
This work experimentally studied the effect of concentration of asphaltenes and resins on static and dynamic properties of oil-air interfaces and also on bulk viscosity.About:
This article is published in Journal of Colloid and Interface Science.The article was published on 2001-07-15. It has received 136 citations till now. The article focuses on the topics: Asphaltene & Elastic modulus.read more
Citations
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Journal ArticleDOI
The colloidal structure of bitumen: Consequences on the rheology and on the mechanisms of bitumen modification
TL;DR: A general picture of bitumen structure is shown to emerge and it shows that a simple solvation parameter allows quantifying the effect of the asphaltenes on the rheological properties ofbitumen.
Journal ArticleDOI
Water-in-Crude Oil Emulsion Stabilization: Review and Unanswered Questions
TL;DR: Several of these means of emulsion and thin-film stabilization of emulsions in petroleum-water mixtures are reviewed in this paper, as well as some of the key physical and chemical means of characterizing both the materials that stabilize the emelsions and the means of charactersizing the oil-water interface and the emulsion films themselves.
Journal ArticleDOI
Interfacial Rheology of Globular and Flexible Proteins at the Hexadecane/Water Interface: Comparison of Shear and Dilatation Deformation
TL;DR: In this article, a detailed comparison of the interfacial shear and dilatational responses of a globular protein, Lysozyme, and a disordered protein, β-casein, and the kinetics of network formation at the hexadecane/water interface is presented.
Journal ArticleDOI
Influence of pH on Stability and Dynamic Properties of Asphaltenes and Other Amphiphilic Molecules at the Oil−Water Interface†
TL;DR: In this paper, the authors present a study of dynamic interfacial tension of interfaces between water and a model oil (toluene) in which variable amounts of asphaltenes are solubilized.
Journal ArticleDOI
Interfacial rheology of asphaltenes at oil-water interfaces and interpretation of the equation of state.
TL;DR: The observed interfacial effects of the adsorbed asphaltenes, correlated by the Langmuir EOS, are consistent with the asphaltee aggregation behavior in the bulk fluid expected from the Yen-Mullins model and supports the hypothesis that nanoaggregates do not adsorb on the interface.
References
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Book
Physical chemistry of surfaces
TL;DR: In this paper, the authors discuss the nature and properties of liquid interfaces, including the formation of a new phase, nucleation and crystal growth, and the contact angle of surfaces of solids.
Journal ArticleDOI
Possible mechanism for the spontaneous rupture of thin, free liquid films
TL;DR: In this article, the stability of a free, thin liquid film against small, spontaneous thickness fluctuations is explored, and the critical thickness is calculated for microscopic, circular films and compared with measurements of Scheludko and Exerowa.
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Effects of Asphaltene Solvency on Stability of Water-in-Crude-Oil Emulsions
TL;DR: In this article, the authors developed a molecular model in which they proposed that the integrity of these films and thus their ability to stabilize water-in-crude-oil emulsions are sensitive to a variety of crude solvency parameters, such as aromaticity, resin-to-asphaltene ratio, and polar functional group concentration.
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Effects of Asphaltene Aggregation in Model Heptane–Toluene Mixtures on Stability of Water-in-Oil Emulsions
TL;DR: The results of this study strongly supports the theory that asphaltenes are the most effective in stabilizing emulsions when they are near the point of incipient precipitation and points to the significance of the solubility state of the asphaltones in determining the emulsifying potential of these crude oils.
Journal ArticleDOI
Viscoelastic properties of triacylglycerol/water interfaces covered by proteins
TL;DR: In this article, a dynamic drop tensiometer is used to measure the viscoelastic modulus in compression/dilation of surfactant-covered interfaces, where a droplet a few mm in diameter is subjected to sinusoidal fluctuations of its volume.