Abstract:For surface modification, montmorillonite(MMT)was treated with a controlled amount of ethylenediamine and octadecyl amine. The nanocomposite were investigated by FTIR,WAXD and SEM. The result indicated that the gallery distance of silicate layers in PMT,OMT were added from 1.196 nm to 2.484 nm and 3.341 nm respectively.