| 摘要 |
PURPOSE: A polylactic acid resin composition is provided to have excellent appearance together with optimized flexability, and to have excellent physical property, transparency, thermal conductivity, blocking resistance, film processability, etc. CONSTITUTION: A polylactic acid resin composition comprises polylactic acid resin, and antioxidant. The polylactic acid resin comprises a hard segment comprising polylactic acid repeating unit in chemical formula 1, and a soft segment comprising polyurethane polyol repeating unit in which polyether-based polyol repeating units in chemical formula 2 with a urethane bond as a medium are linearly connected from each other. The amount of the antioxidant is 100-1500 ppm based on the added amount of a monomer for forming the repeating unit. In chemical formula 1 and 2, A is C2-5 linear or branched alkylene group, m is an integer from 10-100, and n is an integer from 700-5000. |
