Definition of surfactant

Any surfactant is composed of a non-polar lipophilic (hydrophobic) hydrocarbon chain group and a polar hydrophilic (oleophobic) group, and the two parts are separated at both ends, forming a non-polar Symmetrical structure

Surfactant molecules have both hydrophilic polar groups and lipophilic non-polar groups.

Cleaning agents, corrosion inhibitors, and surfactants are the three major components of chemical cleaning solutions

In summary, surfactants in chemical cleaning have two main functions: one is to use the dissolution of micelles to increase the apparent concentration of insoluble organic pollutants, that is, solubilization; the other is because surfactants have amphiphilic groups , Can be adsorbed or concentrated on the interface between the oil phase and the water phase to reduce the interfacial tension

Surfactants have both hydrophilic and hydrophobic bases in their molecular structure.

There are many classification methods for surfactants

Among them, anionic surfactants include sulfonates (such as sodium linear alkyl benzene sulfonate and sodium a-alkenyl benzene sulfonate), sulfates (fatty alcohol polyoxyethylene ether sodium sulfate and sodium lauryl sulfate) And fatty acid salt; cationic surfactants include cetyl dimethyl ammonium chloride (1631), octadecyl trimethyl ammonium chloride (1831), cationic guar gum (C-14S), cationic silicone oil , Dodecyl dimethyl amine oxide (OB-2); non-ionic surfactants include alkyl alcohol amide (FFA), fatty alcohol polyoxyethylene ether (AE), alkyl phenol polyoxyethylene ether (APE or OP), Twain

Related link: Itaconic acid-methacrylic acid copolymer