Preparation and Characterization of Biodegradable Polylactic acid/Gelatinized Cornstarch Foams

摘要

Biodegradable foams derived from poly(lactic acid) (PLA) and gelatinized cornstarch (GS) were prepared by twin-screw extrusion using Azodicarbonamide(AC) as blowing agent and talc as nucleation agent. Foams with a relatively fine and uniform cell morphology and better foam properties were obtained under optimized conditions of PLA/GS ratio at 3:1, 1.5% AC content, and MAH and glycerol blend system.