abstract |
An object of the present invention is to provide a method for producing a resin composition having a high molecular weight, a high crystallinity and a high melting point, containing a stereocomplex crystal of polylactic acid. The present invention comprises polylactic acid (A) mainly composed of L-lactic acid units and having a melting point of 140 to 180 ° C., and polylactic acid (B) mainly consisting of D-lactic acid units and having a melting point of 140 to 180 ° C. , (A) and (B) have a weight ratio in the range of 10:90 to 90:10, and are heat-treated in a temperature range above the melting point derived from polylactic acid homocrystal and below the melting point derived from stereocomplex crystal. It is the manufacturing method of the resin composition characterized by doing. [Selection] Figure 1 |