BIODEGRADABLE HEAT RESISTANT RESIN COMPOSITION, AND SHEET, MOLDING, AND EXPANDED MATERIAL THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide a resin composition for an expansion material having decomposability and heat resistance. SOLUTION: This is a resin composition comprising 50-99.9 mass % polylactic acid resin containing at least 20 mass % polylactic acid having not higher than 160,000 weight average molecular weight, and an L-form to D-form ratio of not lower than 95/5 or not higher than 5/95, and 0.1-2.5 mass % isocyanate compound. This resin composition generates in the reducing temperature process of a differential scanning calorimetry(DSC) an exothermal peek derived from crystallization of not less than 10 J/g equivalent of a polylactic acid resin at a reducing temperature rate of not less than 20 deg.C/min.