BIODEGREDABLE POLYMER BLEND HAVING IMPROVED NOTCHED IZOD IMPACT STRENGTH

摘要

A polymer blend comprising (A) 70 to 75% by weight of at least one flexible biodegradable polymer (A) having a glass transition temperature less than 0°C; (B) 25% by weight of at least one rigid biodegradable polymer (B) having a glass transition temperature greater than 10°C; and (C) up to 5% by weight of at least one biodegradable additive (C), said percentages being based on the total weight of the polymer blend; wherein said polymer blend has a notched Izod impact strength according to ASTM D256 of at least 397.5 J/m (7.5 ft-lbs/in).