| abstract |
The invention relates to a biodegradable film prepared by chemical bonding of starch and polyethylene chains using a coupling agent such as maleic anhydride, methacrylic anhydride or maleimide which bonds with starch and polyethylene, and acid catalytic comonomer like acrylic acid and/or methacrylic acid. The coupling agent (such as maleic anhydride, methacrylic anhydride or maleimide) is used at an amount of 0.01 - 10 weight%, acid catalytic comonomer such as acrylic acid and/or methacrylic acid at an amount of 0.01 - 10 weight% and radical initiator at an amount of 0.01 1.0 weight% based on the amount of polyethylene. |