Vigilancia Tecnológica

The disclosure relates to biodegradable and/or compostable polyester single- or multilayer films having improved barrier properties, in particular moisture or water barrier properties. In some cases, the films can be formed from stereocomplex polylactic acid (sc- PLA), which has favorable water barrier properties, can be conveniently formed via cast-film extrusion, and is biodegradable and compostable. In some cases, the films can be multilayer films including an sc-PLA or polyhydroxyalkanoate (PHA) layer to provide water barrier properties, a hydrophilic polymer/filler layer to provide oxygen barrier properties, and biodegradable polyester layer to sealing or other mechanical properties. The films can be used to package a variety of articles to improve their storage life, in particular for articles that are sensitive to water and/or oxygen, for example including food items, while still providing environmentally friendly end-of-life disposal options via composting.