Biodegradation of Blown Films Based on Poly(lactic acid) under Natural Conditions

Abstract

Abstract Summary: Commercially available polymer Bioflex® 219F, blend of polylactic acid and biodegradable co‐polyester, was used for film preparation, performed on mono‐extrusion blown moulding machine. Resulting thin film was investigated on biodegradability in composting conditions for 6 weeks. The influence of microbial attack on mechanical, physico‐chemical properties, weight loss and surface morphology was tested weekly. The results obtained during 6 weeks of composting indicate relatively good accessibility to biological degradation. Moreover, the time course of studied properties was observed through the test period.