Study of the electrical properties of cationic bitumen emulsions by microelectrophoresis

Thermodynamics of micellization of cationic surfactants based on O-alkyl and O-perfluoro-N,N′-diisopropylisourea: Effect of the counter ion nature

“…They also play an important role in various industrial fields as corrosion inhibitors [3], in road pavement [4], and in the food industries [5]. Large volumes of production of this type of surfactants have highlighted the need to use surfactants more efficiently.…”

Modified Chitosan as a “Multi‐subtype” Macromolecular Emulsifier for Preparing Asphalt Emulsion

“…Asphalt emulsions can be divided into three types, including cationic, anionic, and non‐emulsion from the surface charge of emulsion droplets. Among them, cationic asphalt emulsions were widely used in the field of road traffic because of its stronger adhesion with the stone material compared with the other asphalt emulsions . Generally, cationic asphalt emulsions were obtained by using the emulsifier with the positively charged group at its head, such as alkylamines, amidoamine, imidazolines, and alkyl quaternary ammonium salts …”

“…Among them, cationic asphalt emulsions were widely used in the field of road traffic because of its stronger adhesion with the stone material compared with the other asphalt emulsions. [7][8] Generally, cationic asphalt emulsions were obtained by using the emulsifier with the positively charged group at its head, such as alkylamines, amidoamine, imidazolines, and alkyl quaternary ammonium salts. [7,9] Chitosan is the product of chitin deacetylation, which is the second abundant biopolymer in nature and contains bundle hydroxyl, oxo, and amine groups.…”

“…[7][8] Generally, cationic asphalt emulsions were obtained by using the emulsifier with the positively charged group at its head, such as alkylamines, amidoamine, imidazolines, and alkyl quaternary ammonium salts. [7,9] Chitosan is the product of chitin deacetylation, which is the second abundant biopolymer in nature and contains bundle hydroxyl, oxo, and amine groups. [10][11] Therefore, it can be easily converted to cationic emulsifiers by protonation of the free amine groups.…”

Synthesis and surface properties of a series of surfactants based on O-alkyl and O-perfluoro-N,N′-diisopropylisoureas

“…Scheme 1 illustrates the adhesion between asphalt and gravels in the presence of surfactants. As the deterioration of road pavement often arises from a lack of adhesion, this drawback can be overcome by the use of a small amount of surfactants in the binder, at a low cost compared to the pavement itself [6][7][8][9].…”