Biodegradable resin composition and method for biodegradable sheet using the same

PURPOSE: A biodegradable resin composition is provided to increase melting strength by modifying the composition by heat-initiated crosslinking reaction, thereby improving tensile strength and elongation of a final product. CONSTITUTION: A biodegradable resin composition includes a polylactic acid resin, a thermal initiator, and a crosslinked monomer, and is modified by heat-initiated crosslinking reaction. The thermal initiator is one or more among azo or peroxide-based compounds. The content of the heat initiator is 0.1-10 parts by weight, based on 100.0 parts by weight of polylactic acid resin. The content of the crosslinked monomer is one or more among acrylic monomers and methacrylic monomers. The content of the crosslinked monomer is 0.1-10 parts by weight with regard to 100.0 parts by weight of a polylactic acid resin. [Reference numerals] (AA) Example; (BB) Comparative example