The Types And Characteristics Of Surfactants Are Discussed

- Jun 19, 2017 -

Surfactant is a substance with a fixed hydrophilic lipophilic group, which can be arranged in the direction of the surface of the solution and can cause the surface tension to decrease significantly. The molecular structure of the surfactant is two amphiphilic: one side is hydrophilic group and the other end is hydrophobic group; hydrophilic groups are often polar groups, such as carboxylic acid, sulfonic acid, amino acid, or amine and salt, but also Xian Anji, hydroxyl and ether bond; and hydrophobic group is often not very of the hydrocarbon chain, such as more than 8 carbon atoms in a hydrocarbon chain. Surface active agent is divided into ionic surfactant and non-ionic surfactant.

According to the dissociation properties of polar groups, classification of 1 anionic surfactants: sodium 2, twelve cationic surfactants: quaternary ammonium compounds, 3 zwitterionic surfactants: lecithin, amino acid, betaine, 4 nonionic surfactants: fatty acid esters of glycerol, sorbitan fatty acid (Si Pan). Polysorbate (Twain)

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