POLYLACTIC ACID-BASED THERMOPLASTIC RESIN COMPOSITION AND ITS MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a polylactic acid-based thermoplastic resin composition which uses a polylactic acid resin and a recycled aromatic polycarbonate resin and exhibits a practically excellent physical property balance and a molded article surface appearance. SOLUTION: This polylactic acid-based thermoplastic resin composition comprising a polylactic acid resin, a rubber-containing styrenic resin and an aromatic polycarbonate resin as resin components is characterized in that 5 to 95 pts.wt. of the polylactic acid resin and 95 to 5 pts.wt. of the total amount of the rubber-containing styrenic resin and the aromatic polycarbonate resin are contained per 100 pts.wt. of the resin components; the recycled aromatic polycarbonate resin recycled from optical disks is contained in an amount of≥5 pts.wt. as at least one part of the aromatic polycarbonate resin; and the total amount of the polylactic acid resin and the recycled aromatic polycarbonate resin is≥50 pts.wt. The polylactic acid-based thermoplastic resin composition can expand the uses of the polylactic acid resin as a plant-based resin, promote the practice of a carbon neutral idea, and contribute to the reduction of environmental loads due to the recycling of the used optical disks. COPYRIGHT: (C)2008,JPO&INPIT