Functional mechanism of dispersants

We all know that dispersants are interfacial active agents that possess both lipophilic and hydrophilic properties within their molecules. It can uniformly disperse solid and liquid particles of inorganic and organic pigments that are difficult to dissolve in liquids, while also preventing particle settling and aggregation, forming amphiphilic reagents required for stable suspensions. So today we will supplement the specific performance and mechanism of dispersants, including the following points.

1. Adsorb onto the surface of solid particles, reducing the interfacial tension between liquid-liquid or solid-liquid. Make the surface of condensed solid particles easy to wet.

2. Polymer dispersants form an adsorption layer on the surface of solid particles, increasing the surface charge and enhancing the reaction force between particles that form three-dimensional obstacles.

3. Forming a bilayer structure on the surface of solid particles, the polar end of the outer dispersant has strong affinity with water, increasing the degree of wetting of solid particles by water. Solid particles move away from each other due to electrostatic repulsion.

4. Make the system uniform, increase suspension performance, prevent precipitation, and make the physical and chemical properties of the entire system the same.

Due to their significant advantages, dispersants play a very important role in industrial production.