METHOD FOR PRODUCING CROSSLINKED MOLDED ARTICLE OF POLYLACTIC ACID, AND CROSSLINKED MOLDED ARTICLE OF POLYLACTIC ACID

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a biodegradable crosslinked molded article of a polylactic acid, hardly causing reduction of strength even at a high temperature over 60°C which is the glass transition temperature of the polylactic acid, and capable of maintaining the shape.;SOLUTION: The method for producing the crosslinked molded article of the polylactic acid comprises the first step for producing a primary crosslinked product by primarily crosslinking a mixture of a polylactic acid and a crosslinkable monomer (A), the second step for impregnating the primary crosslinked product of the polylactic acid produced at the first step with a crosslinkable monomer (B) by soaking the primarily crosslinked product of the polylactic acid in the crosslinkable monomer (B) at a temperature higher than the glass transition temperature of the polylactic acid and not higher than the melting point thereof, and the third step for crosslinking the primarily crosslinked product of the polylactic acid, impregnated with the crosslinkable monomer (B).;COPYRIGHT: (C)2007,JPO&INPIT