Related Experiment Video
Updated: Mar 31, 2026
08:03
Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
Published on: May 31, 2022
5.7K
Interfacial behavior of asphaltenes.
Dominique Langevin1, Jean-François Argillier2
1Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, Université Paris Saclay, Bâtiment 510, 91405 Orsay Cedex, France.
Advances in Colloid and Interface Science
|October 27, 2015
Summary
This review examines asphaltene behavior at interfaces, focusing on how aggregation influences emulsion stability. It explores adsorption and interfacial rheology, crucial for understanding oil-water systems.
Area of Science:
- Petroleum Science
- Colloid and Surface Science
Background:
- Asphaltenes are complex molecules found in crude oil.
- Their behavior at interfaces significantly impacts oil recovery and processing.
- Understanding interfacial properties is key to managing emulsions.
Purpose of the Study:
- To review literature on asphaltene interactions at various interfaces.
- To elucidate the role of asphaltene aggregation in interfacial phenomena.
- To discuss adsorption reversibility and interfacial rheology concerning emulsion stability.
Main Methods:
- Literature review of studies on asphaltenes at oil-water, air-water, gas-oil, and solid-liquid interfaces.
- Analysis of the Yen-Mullins model for asphaltene aggregation in bulk.
- Discussion of experimental findings on adsorption and interfacial rheology.
Main Results:
- Asphaltene aggregation, as described by the Yen-Mullins model, plays a critical role at interfaces.
- Adsorption behavior and interfacial rheology are strongly linked to emulsion stability.
- Oil-water interfaces are particularly influenced by asphaltene interfacial properties.
Conclusions:
- Asphaltene aggregation is a key factor governing interfacial behavior.
- Interfacial rheology and adsorption reversibility are critical parameters for emulsion stabilization.
- Further research into asphaltene interfacial dynamics can improve oil industry processes.
Related Concept Videos
01:27Surface Active Agents
121
Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
121
01:06Interfacial Electrochemical Methods: Overview
1.1K
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
1.1K
01:35Asymmetric Lipid Bilayer
11.0K
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
11.0K
01:30Micelles
214
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
214
03:00Solubility
22.8K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
22.8K
01:13Contact Angle
27.9K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
27.9K