ENVIRONMENT-FRIENDLY POLYLACTIC ACID COMPOSITION WITH IMPROVED IMPACT RESISTANCE, HIGH THERMAL DEFORMATION TEMPERATURE AND EXCELLENT BIODEGRADABILITY, AND A MANUFACTURING METHOD THEREOF

摘要

PURPOSE: An environment-friendly polylactic acid composition is provided to have biodegradability, excellent impact resistance, and high flexural modulus and thermal deformation temperature.;CONSTITUTION: An environment-friendly polylactic acid composition comprises 100.0 parts by weight of poly lactic acid which comprises 40-93 weight% of polylactic acid of L-optical isomer and 3-60 weight% of polylactic acid of D-optical isomer, 3-30 parts by weight of one or more copolymers selected from an acryl-based copolymer and reactive acrylic copolymer, and 1-20 parts by weight of organically surface-treated phyllite powder. The average particle size of the organically surface-treated phyllite powder is 0.5-500 micron. The polylactic acid composition additionally comprises 3-30 parts by weight of impact-reinforcing agent.;COPYRIGHT KIPO 2013