What is the surfactant in laundry detergent?

Surfactant refers to the addition of a small amount of substances that can significantly change the interfacial state of the solution system. Surfactants are generally organic amphoteric molecules with hydrophilic and hydrophobic groups, which are soluble in organic solutions and aqueous solutions. It has a fixed hydrophilic and lipophilic group, which can be arranged in a directional way on the surface of the solution.

Surfactants are divided into ionic surfactants and non-ionic surfactants. It is a large class of organic compounds, their properties are very distinctive, extremely flexible and widespread, through the adsorption of gas-liquid two-phase interface to reduce the surface tension of water, can also be adsorbed between the liquid interface to reduce the oil-water interface tension. Gemini surfactant is defined as a compound that connects (bonds) two amphiphiles at or only by the head group by linking groups, and two or more of the same or almost identical surfactant monomers are linked together by chemical bonds, and the two relatives are joined together with a linking group near the hydrophilic head group at or near the hydrophilic head group, and a surfactant is called a gemini surfactant.

This kind of surfactant has anionic type, non-ionic type, cationic type, zwitterionic type, anionic type, anonyonic type, positive non-ionic type, etc. Surfactants are molecules formed from two distinct particles, one that is extremely lipophilic and the other that is extremely hydrophilic. When dissolved in water, surfactants reduce the surface tension of water and increase the solubility of organic compounds.

A wide range of surfactants (cationic, anionic, nonionic, and amphoterical) provide a wide range of functions for specific applications, including foaming effects, surface modification, cleaning, emulsions, rheology, environmental and health protection. Surfactants are used as performance additives in many industrial formulations, such as personal and home care, as well as in countless industrial applications: metal treatment, industrial cleaning, oil extraction, pesticides, etc.

Simple, surfactant.

It is the main ingredient in stain removal, which is a large class of organic matter. This organic matter is hydrophilic at one end and lipophilic at the other. The hydrophilic end is bound to water (i.e. with water molecules.

Powerful action), the lipophilic end binds to the stain (oil stain, etc.), and then rinses with water to bring the stain off the clothing. Different surfactants have different decontamination effects. Maybe one day, people will be able to synthesize a surfactant like the one advertised.

Through the affinity of different parts of the molecule for the two phases, the two phases are regarded as components of the original phase, and the molecules are arranged between the two phases, so that the surface of the two phases is equivalent to the inside of the molecule. This reduces the surface tension.

Since both phases regard them as a component of the original phase, it is equivalent to the fact that the two phases do not form an interface with the surfactant molecule, which is equivalent to partially eliminating the interface between the two phases in this way, and the surface tension and surface free energy are reduced. <>

The active ingredient is an active ingredient in a washing product, and generally speaking, a high total active ingredient means that the active ingredient in the laundry detergent is high.

However, chemistry is a very complex thing, and there are many kinds of active substances, both good and bad. The total active ingredient is not necessarily the better, even if the higher the active ingredient, the stronger the decontamination ability.

Let's get rid of stains, but a lot of laundry detergents have fluorescents.

The main ingredient of laundry detergent is surfactant (nonionic + anionic surfactant). The main ingredient of laundry detergent is an anionic surfactant: sodium alkylbenzene sulfonate.

Surfactants have both hydrophilic and lipophilic groups in their molecules, which are also called "amphiphilic".

Due to the hydrophilic and lipophilic properties of surfactants, at the right concentration, they can form micelles in water: the hydrophilic head is attracted outward by the water, and the lipophilic tail is repelled by the water and faces inward. That's why we can pull the oil stains off our clothes and wash our clothes.

Sensitive, the laundry detergent mainly contains the following main ingredients, and then it is added with water. Surfactants: Surfactants are the main active ingredients for detergent to remove dirt, and are often composed of anionic surfactants and nonionic surfactants.

Commonly used anionic surfactants are aliphatic alcohol ethoxyethylene ether sulfate sodium (AES), alkylbenzene sulfonate sodium (LAS), alkyl sulfonate sodium (SAS), olefylsulfonate (AOS), etc., 1-2 kinds of main surfactants, nonionic surfactants such as: fatty alcohol ethoxylates (AEO7, AEO9, etc.) as auxiliary synergistic active agents, can add nonionic surfactants with small EO number as penetrants to increase the penetration rate. Alkanolamide (6501) or amine oxide mainly plays a synergistic role in thickening Hordan.

The industry recommended standard for total surfactant content requires no less than 15% to ensure that it meets the decontamination requirements in normal use.

The surfactant components in dish soap are, nonionic surfactant, anionic surfactant.

1. Nonionic surfactants

Nonionic surfactants are non-ionizing in aqueous solution, and their hydrophilic groups are mainly composed of a certain number of oxygen-containing groups (generally ether groups and hydroxyl groups).

It is this that determines that nonionic surfactants are superior to ionic surfactants in some aspects; Because it is not in an ionic state in solution, it has high stability, is not easily affected by the presence of strong electrolysis, noisy inorganic salts, and is not easily affected by pH value, and has good compatibility with other types of surfactants.

Nonionic surfactants do not ionize in water, and are amphiphilic molecules with hydroxyl (one OH) or ether bond (R—O—R) as the hydrophilic group, due to the weak hydrophilicity of hydroxyl and ether bonds, so the molecule must contain multiple such groups - to show a certain hydrophilicity, which is very different from the anionic and cationic episomal active agent that can exert hydrophilicity with only one hydrophilic group.

It is precisely because the nonionic surfactant has the characteristics of non-ionization in water, which determines that it is superior to ionic surfactant in some aspects, such as good solubility in water and organic solvents, high stability in solution, and is not easy to be affected by strong electrolyte inorganic salts, acids and alkalis.

Because it is compatible with other types of surfactants, it can often be mixed and used well. Nonionic surfactants have good resistance to hard water and low foaming, so they are suitable for special detergents. Because it has a variety of properties such as dispersing, emulsifying, foaming, wetting, and solubilizing, it has important uses in many fields.

2. Anionic surfactant

Anionic surfactant is a class of products with the longest development history, the largest output and the largest variety among surfactants. Anionic surfactants are divided into sulfonate and sulfate according to the structure of their hydrophilic groups, which are the main categories of anionic surfactants.

The various functions of surfactants are mainly manifested in changing the properties of the surface of the liquid, the liquid-liquid interface and the liquid-solid interface, among which the surface (boundary) surface of the liquid is the most important.

The part of the negatively charged surfactant that acts as a surface active after ionization in water is called an anionic surfactant.

Structurally, anionic surfactants are divided into four categories: carboxylates, sulfonates, sulfates and phosphates.

Anionic polyacrylamide, due to which it has:

1. Clarification and purification;

2. Sedimentation promotion;

3. Filtration and promotion;

4. Thickening and other functions.

Detergent is not laundry detergent, laundry detergent is a type of detergent.

Detergent is a specially formulated product that is used for cleaning through the washing process. The main components are usually composed of surfactants, detergents and additives. There are many types of detergents, which can be divided into heavy scale detergents and light scale detergents according to the type of dirt removed; According to the shape of the product, it can be divided into powder, block, paste, slurry and liquid and other forms.

Laundry detergent is a liquid laundry detergent with a similar composition to laundry detergent, and is suitable for washing heavy dirt fabrics such as underwear, bedding and bed sheets. It has good water solubility and can be quickly dissolved in cold water to fully function. Laundry detergents are often added with low-foaming nonionic surfactants, so they are easier to rinse.

How to buy detergents

Different materials of clothing, the requirements for detergent are also different, according to the situation of the clothes to choose the right detergent:

1. Laundry detergent.

If you wash clothes that are not close to the body, such as curtains at home, you can choose to use laundry detergent when cleaning, we only need to wash it a few times to reduce the residue as much as possible.

2. Laundry detergent.

If you say that the clothes you wear close to the body do not have stubborn stains and do not belong to the fabric of special materials, you can choose ordinary laundry detergent.

3. Special laundry detergent.

If it is a woolen sweater, silk and other special material clothing, it is best to choose a special laundry detergent, otherwise it will also damage the clothes.

4. Laundry pods.

Specially designed for machine washing, it is easy to operate, does not dirty hands, has the same cleaning power as laundry detergent, and is easy to rinse. It is only suitable for machine laundry and must be used with a washing machine.

Summary. The rapid growth of the laundry detergent market has led to the continuous advancement of its technology and product innovation. It was discussed from the perspective of the development trend of laundry detergent technology.

Fatty acid methyl ester sulfonate (MES), secondary alkyl sulfonate (SAS), isomeric alcohol ethoxylate, fatty alcohol ethoxyethylene-polyoxypropylene ether as well as.

Application and development prospects of new surfactants such as fatty acid methyl ester ethoxylates in laundry detergent.

Laundry detergent increases the active substance.

The rapid growth of the laundry detergent market has led to the continuous advancement of its technology and product innovation. From the perspective of the development trend of laundry detergent technology, the application and development prospects of new surfactants such as fatty acid methyl ester sulfonate (MES), alkyl sulfonate (SAS), isomeric alcohol polyoxyethylene polyoxyethylene shade ether, fatty alcohol polyoxyethylene-polyoxypropene tazyfolic ether and fatty acid methyl ester ethoxylate in laundry detergent were discussed.

What to add to laundry detergent to boost the actives.

The use of soft water with less calcium and warm water at 40 degrees Celsius can increase the active ingredient content of the laundry detergent.

What ingredients to add.

Fatty acid methyl ester sulfonate (MES), secondary alkyl sulfonate (SAS), isododenide alcohol ethoxylate, model fatty alcohol ethoxyethylene ether, and fatty acid methyl ester ethoxylate.