What are the surfactant additives and what are the ingredients of surfactants?

Cationic, anionic, nonionic, amphoterior, anionic surfactant.

SurfactantsThere are natural ones, such as:Phospholipid.

Sodium stearateC17H35Coona et al. In terms of its physical and chemical composition, surfactants themselves are composed of many fine small molecules, which are combined according to a certain arrangement. However, no matter what kind of surfactant, its molecular structure is composed of two parts.

One end is a non-polar lipophilic hydrophobic group; The other end of the molecule is a hydrophilic group.

Introduction:

When the solution contains surfactant, the surfactant molecules will automatically enrich to the surface of the solution and produce a directional arrangement, forming positive adsorption in the solution. Positive adsorption changes the surface properties of the liquid, thereby reducing the surface tension of the solution.

In a system where different phases coexist, there is an interface between phases, and the interface between a solid and a gas or a liquid and a gas is commonly known as the surface. There is interfacial tension (or surface tension) between phases, and the magnitude of the surface tension of the solution is related to the nature and concentration of the solute.

SurfactantsThe molecular structure is amphoterical: one end is a hydrophilic group, and the other end is a hydrophobic group; Hydrophilic groups are often polar groups, such asCarboxylic acids, sulfonic acid, sulfuric acid, amino or amine group and its salts, hydroxyl group, amide group, ether bond, etc. can also be used as polar hydrophilic groups; The hydrophobic group is often a non-polar hydrocarbon chain, such as 8Carbon atomsabove the hydrocarbon chain.

Nature:

Surfactants reduce the surface tension of water by adsorption at the gas-liquid interface.

It can also reduce the oil-water interface tension by adsorbing between the liquid interface. Many surfactants can also aggregate in bulk solutions.

Vesicle. and micelles are such aggregates. The concentration at which the surfactant begins to form micelles is called the critical micelle concentration or CMC.

When micelles form in water, the tails of the micelles form nuclei that encapsulate the oil droplets, while their (ionic polarity) heads form an outer shell that remains in contact with the water.

The above content reference: Encyclopedia - surfactants.

Classification method of surface active dust wheel agent:

1. According to the hydrophobic structure, it is classified into straight chain, branched chain, aromatic surfactant incense chain, fluorine-containing long chain, etc.;

2. According to the hydrophilic group, it is classified into carboxylate, sulfate, quaternary ammonium salt, PEO derivatives, lactone, etc.;

3. According to the ionic nature of its molecular composition, it is divided into ionic type, non-ionic type, etc., as well as various classification methods according to its water solubility, chemical structure characteristics, raw materials, etc.;

4. It is more appropriate to divide according to the chemical structure, that is, when the surfactant is dissolved in water, Brother Jing is divided into ionic surfactant and non-ionic surfactant according to whether it generates ions and its electrical properties.

Activated carbon is mainly made of substances with high carbon content, such as wood, coal, fruit shells, bones, petroleum residues, etc. With coconut shell as a very commonly used raw material, under the same conditions, the active quality and other characteristics of coconut shell activity are very good, because it has a large specific surface. If you want to know more about it, you can consult Mulinsen activated carbon Jiangsu ****, thank you!

Surfactants have the functions of emulsification, dispersion, wetting, washing, compatibilization, foaming and defoaming.

Widely used in washing, coating ink, textile printing and dyeing, pesticide emulsification, adhesives, paint film, electroplating cleaning and other industries, with a wide range of uses and many types, and the applicable surfactant products can be selected according to their own product needs.

Hanke Chemical.