Biosurfactants have great development prospects

2022-03-07 16:54:22

Biosurfactants also have great development prospects. They are amphiphilic compounds with surface activity produced by the metabolism of biological systems. Compared with chemical synthetic surfactants, biosurfactants not only have high surface activity and strong emulsifying ability, but also have the advantages of non toxicity, non stimulation, fast and complete biodegradation, no environmental pollution and wide source of production raw materials, which are not possessed by general chemical synthetic surfactants. Therefore, there is a great potential demand in the market.

This kind of surfactant is a new type of surfactant formed by connecting two traditional surfactant molecules at or near the hydrophilic head group through a connecting group. Compared with traditional surfactants, cationic gemini surfactant has significant retarding effect and can be used as a new retarding agent in fiber dyeing.

Choi et al. Studied the dispersion dyeing properties of dye 1,4-diamine anthraquinone (1,4-daa) on nylon-6 and polyester in the presence of cationic gemini surfactants 12-3-12 and 12-6-12. It was found that Gemini surfactant can be used to control dyeing kinetics and improve dye absorption.

Xue Xuting et al] synthesized n, N, n ′, n ′ - bis (2-dodecyloxy-2-oxyethyl) - 1,2-ethylenediamine hydrochloride, studied its dyeing performance on flax fabric as a dyeing assistant of reactive dye, and found that the dyeing performance of flax fabric treated with Gemini surfactant was better than that of traditional cationic surfactant cetyltrimethylammonium bromide, The dye uptake and fixation rate were increased by nearly 10% respectively.

As we all know, anionic surfactants used in detergents have certain toxicity and irritation to the skin, and will inactivate enzymes. Non ionic Gemini surfactants can be used as emulsifiers to produce O/W emulsions, so as to produce better washing effect at low concentration. The synergistic effect of Gemini surfactants and traditional surfactants is stronger than that of traditional surfactants.

Adding a small amount of Gemini anionic surfactant to the solution can significantly reduce the negative surfactant effect, such as the concentration of Gemini anionic surfactant in the solution.

Amphoteric Gemini surfactant is a mild multifunctional surfactant. In specific applications, only a small amount of Gemini surfactant needs to be added to the surfactant mixture to significantly improve the formulation performance. At present, due to the high price of Gemini surfactant, it is difficult to be used in the detergent industry on a large scale. The most common way is to mix Gemini surfactant with traditional surfactant.