Abstract
Transparent self-standing clay films are developed by casting method. Eighty to ninetyfive weight percent of commercially available synthetic clay and five to twenty weight percent of carboxymethyl cellurose sodium salt or sodium polyacrylate (PA) were mixed to give an uniform paste followed by drying and peeling. The produced self standing films show high total light transparency over 90 percent and high gas barrier property. Pecular improvement on the heat durability observed in case of clay-PA composite films. The microstructure of the films were analyzed by electromicroscopy and XRD.
