Preparation and Research of Anionic and Cationic Secondary Modified Organophilic Montmorillonite

A novel method is proposed to modify montmorillonite with anionic surfactants, cationic surfactants and halides stearyl cationic surfactants made by our group (Z-surfactant). The structure of organophilic montmorillonite (OMMT) was characterized by XRD and TG. The results of X-ray diffraction show that cationic surfactants and anionic surfactants are all intercalated into the layer of MMT. When modified with cationic surfactants, the interlayer spacing of MMT increases from 1.24 nm to the maximum of 3.76 nm. When it was secondary modified, the insertion order is to insert the cation first and then the anion. The interlayer spacing of montmorillonite increases to 4.80 nm, the modification effect is well.