POLYACTIC ACID COMPOSITION

摘要

A polylactic acid resin composition is provided to increase compatibility with natural fiber and polylactic acid resin by using a chain extender, to ensure high viscosity, excellent mechanical strength and heat resistance, and to improve surface gloss and color of molded products. A polylactic acid resin composition comprises a polylactic acid resin 10-80 parts by weight, a rubber-modified vinyl-based graft copolymer resin 10-70 parts by weight and natural fiber 5-50 parts by weight. The polylactic acid resin composition includes a chain extender. The polylactic acid resin comprises an L-isomer 95-100 weight% and a D-isomer D 0-5 weight% based on the total weight of the polylactic acid resin. The rubber-modified vinyl-based graft copolymer resin is prepared by graft-polymerizing an aromatic vinyl compound 50-95 parts by weight and a vinyl cyanide compound 5 -50 parts by weight to an elastomer 40-70 weight%.