Polylactic acid-based resin composition and preparation thereof

摘要: PROBLEM TO BE SOLVED: To obtain a composition improved in flexibility and melt tension excellent molding processability by compounding polylactic acid having specific weight-average mol.wt., an aliphatic polyester mol.wt. organic peroxide. SOLUTION: This is obtained melt-kneading 100 pts.wt. of 30,000-500,000, 10-300 elastic modulus 50-1,000 MPa elongation 20-2,000% 0.01-5 peroxide at 150-250 deg.C. The has 0.7-20 g when flow index thereof 10 g/10 min, 50-1,500 100-2,000%. As the polyester, there can be exemplified polycaprolactone, polybutylene succinate, polyethylene succinate like. peroxide, mentioned ketone compounds, hydroperoxide dialkyl peroxides