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VES即表面活性剂,是一种具有双亲分子结构的物质,由于分子双亲性,使得在溶液中呈现出多种聚集状态。表面活性剂在某些条件下,在溶液中的聚集体可形成线型柔性棒状的胶束,这些胶束的直径在5nm左右、长度可以达到100-1000nm,这些棒状胶束之间相互缠绕可形成网络结构,使得溶液具有表面活性剂和聚合物性质,即独特的流变性以及粘弹性。只有溶液形成的棒状胶束都具有粘弹性,表面活性剂才被称为粘弹性表面活性剂(VES)。
VES, a surfactant, is a substance that has a structure of amphipathic molecules that, due to the amphiphilic nature of the molecule, gives rise to many aggregated states in solution. Surfactants Under certain conditions, aggregates in solution form linear, flexible, rod-like micelles with diameters of about 5 nm and lengths of up to 100-1000 nm. These rod-like micelles can entangle with each other The formation of a network structure allows the solution to have surfactant and polymer properties, ie, unique rheology and viscoelasticity. Only the solution formed rod-shaped micelles are viscoelastic, the surfactant is called viscoelastic surfactant (VES).