| 摘要 |
PROBLEM TO BE SOLVED: To provide a polylactic acid resin molded article having heat resistance, and to provide a method for producing the polylactic acid molded article crystallizable in a short time even when subjected to annealing at the vicinity of the melting point (Tm) of the polylactic acid resin, because there has been problems of not being practicable because of requiring excessive time for crystallization when being subjected to annealing treatment at the vicinity of the melting point (Tm) in a conventional method, and, when the crystallization is achieved by using a longer time, causing deterioration of the polylactic acid resin.SOLUTION: A polylactic acid-based molded article obtained by molding a polylactic acid-supercooled melt (A1) of a supercooled melt of a polylactic acid resin (A) contains minute crystals of the polylactic acid resin (A) in the polylactic acid-supercooled melt (A1), and exhibits ≥25 J/g of a calorie (▵Hm - comp) for crystal fusion of the polylactic acid-based molded article, measured by heat-up measurement by a differential scanning calorimeter (DSC). |
