Higher Barrier Nanocomposites Of Copoly (Styrene/ Butyl Acrylate) -Montmorillonite

Drugs are sensitive to the oxygen and water vapor as the quality of these products is adversely affected by the diffusion of the permeants. The two most technical data used for thebarrier polymeric materials with major performance in the packaging industries are oxygen and water vapor transmission rates. Nanoclays are silicates having layered structure, which can effectively increase the vapor diffusion path length. This improved barrier property of the nanocomposite films is due to the increase in the tortuous diffusion path which provides a longer path for diffusion of permeants through the matrix [1- 3].