Abstract: The intercalation bentonite nanocomposites have been producted by sodium bentonite with the intercalation of caprolactam. Its surface property,organization structure and crystal structure was characterized by IR、 SEM and XRD. The adsorption behaviours to organic dye waste water was analyzed by infrared spectum analysis. The results show that the caprolactam has been inserted into the bentonite,s layer successfully.Its adsorption rate to the organic dye waste water all reached more than 96.3%. Its COD wiping...