The nonionic surfactant does not dissociate when dissolved in water, and the lipophilic group in the molecule is substantially the same as the lipophilic group of the ionic surfactant, and the hydrophilic group mainly has a certain amount of oxygen. A group (such as a hydroxyl group and a polyoxyethylene chain) is composed. In the past 20 years, nonionic surfactants have developed extremely rapidly and are becoming more widely used, and will continue to maintain this momentum in the next few years.
Since the nonionic surfactant is not present in the ionic state in the solution, it has high stability, is not easily affected by the presence of strong electrolytes, and is not easily affected by acids and alkalis, and can be mixed with other types of surfactants. It has good capacitance, good solubility in various solvents, and no strong adsorption on the solid surface. Nonionic surfactants are classified according to hydrophilic groups, and there are two types of polyoxyethylene type and polyol type.
Anionic surfactant English chemical term: An-ionic surfactant. A class of surfactants. Upon dissociation in water, a hydrophilic anion is formed. For example, fatty sodium sulfate is surrounded by water molecules, that is, dissociated into two parts, ROSO2-O- and Na+, and negatively charged ROSO2-O-, which is surface active. Anionic surfactants are divided into four major categories: carboxylates, sulfates, sulfonates and phosphates, which have good properties such as decontamination, foaming, dispersion, emulsifying and wetting. Widely used as detergents, foaming agents, wetting agents, emulsifiers and dispersing agents. The yield is the first in the surfactant. It cannot be used together with a cationic surfactant to form a precipitate in an aqueous solution and lose its effectiveness.
In summary, the non-ionic surface is active in water and no ions are produced. The anion surface has positive and negative ions generated in water, and the surface active is an anion moiety. The same is true for the cations.
As for the type of table life used for dry cleaning, I can only tell that it is useful and cannot be generalized.
