Surfactants have been paid more and more attention all over the world

2021-06-04 16:01:39

In recent years, the development and use of environmentally friendly surfactants has been paid more and more attention by the world for the needs of environmental protection and biological safety. Amino acid surfactants have good wetting, foaming, antibacterial, anti-corrosion and antistatic properties, and are almost non-toxic and harmless, and mild to the skin. The degradation products are amino acids and fatty acids, so they have little impact on the environment, and also have the advantages of good compatibility with other surfactants, and can be widely used in cosmetics (facial cleanser, bath lotion, shampoo, shampoo, etc Mask, etc.), detergents, food, beverages, medical and health, mineral flotation, petroleum fuels, metal cleaning, textile printing and dyeing, pesticide dispensing, etc.

1. synthesis process and progress.

Amino acids (and salts) commonly used in the synthesis of N-acyl amino acids series surfactants mainly include sarcosine, glutamate, serine, alanine, valine, leucine, etc., of which the former two are most commonly used, especially sarcosine. The fatty acids used are divided into two types: saturated and unsaturated, such as lauric acid, oleic acid, coconut oleic acid, palmitic acid, hard fatty acid, octanoic acid, decanoic acid, among which lauric acid and oleic acid are more commonly used. The synthesis process can be divided into direct and indirect methods according to the starting reaction raw materials.

2. application status.

Besides the function of traditional surfactants, amino acid surfactants have been applied in many aspects due to their good biodegradability, safety and antibacterial ability. Besides, they have been widely used in the fields of traditional personal cleaner, food additive, metal processing, ore flotation and oil exploitation, In recent years, it has also been applied in the field of biomedical.