Abstract
Smectite-based film “Claist®” was developed. Layered smectite crystals are orderly densely stacked and added organic polymer acts as a binder. Purified bentonite, and synthetic smectite were used because of their good film formability. The film has superior heat-resistance and gas barrier performance. Transparent films were also successfully made from synthetic smectite and transparent organic polymer. The films are hopeful for electric devices including display, hydrogen gas tight sheet, solar cell back sheet, gasket and packing, functional wallpaper, and so on.
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