Organoclay types

Organoclay types: Different organoclay types are defined by variations in their preparation methods, each resulting in unique characteristics. A notable type is synthesized using a reaction vessel with stirring and heating capabilities.

Dried bentonite and ethanol are first added to the vessel, and with stirring at 400 – 600 rpm for around 30 minutes, a uniform suspension is formed as the bentonite disperses thoroughly in ethanol. Proportionally mixed organic modifiers are then slowly introduced, and glacial acetic acid is added dropwise to set the reaction system’s pH to 4 – 5.

The temperature is raised to 70 – 80℃ for a 2 – 3 – hour reaction under stirring.

This process leads to ion exchange between cations in the modifier and sodium ions in bentonite layers, with organic groups integrating into the layers, resulting in an organoclay type characterized by its modified interlayer composition and increased viscosity during synthesis.