Abstract: A starch-based biodegradable film was prepared from linear low density polyethylene (PE-LLD), low density polyethylene (LDPE), epichlorohydrin (EDH) and modified-corn starch using epoxy soybean oil as a plasticizer, a small amount of ethylene propylene diene monomer (EPDM) was used as a compatibilizer. The film could maintain excellent mechanical properties with content of modified starch up to 70%. FTIR was used to characterize the modified starch and SEM was used to observe the morphology of the film before and after the modification. When a rotating mould head was used, the maximum content of starch could be further increased.

Key words: linear low density polyethylene, epichlorohydrin, corn-starch, film, biodegradable, low density polyethylene