Anionic surfactants are the best materials for removing particle soils and some oil stains. In terms of volume, those are the most important group of surfactants used in cleaning products. In the soap world, it is the oldest anionic surfactant. However, artificial anionic surfactants play an important role in modern cleaning products due to the performance of superior detergents.
Anionic surfactants are characterized by a negatively charged hydrophobic polar group. In fact, those are organic substances that, when dissolved in water, form negatively charged particles, anions. Therefore, it can be concluded that when they are added to water, they are ionized and have a negative charge. So they can attach to positively charged particles such as clay.
Nonoionic surfactants do not form cations or anions in water. Their solubility in water is based on the binding of hydrophilic parts to water molecules. Nonoionic surfactants are particularly effective in removing oily soils from synthetic fabrics, but are not effective in removing soil particles as anionic surfactants. In general, they tend to have higher floor levels than other classes of surfactants. Many those can also act as hydrotropes, which act to raise the cloud point of non-ionic surfactants.
Anionic and nonoionic surfactants have many uses as moisturizers, dispersants, emulsifiers, dispersants and foams. Also increasingly, anionic surfactants with a long alkyl alloy chain and a hydrophobic or sulfonate load-bearing end group with a number of sodium, potassium, or ammonium are currently in use. Examples include sulfonic acid salts, alcohol sulfates, alkyl benzene sulfates, phosphoric acid esters, and carboxylic acid salts.
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