PBAT Biodegradation (1 of 2) (IMAGE) ETH Zurich Caption After a few weeks in soils, numerous soil microorganisms colonized the surface of the PBAT films and had begun to biodegrade the polymer. (Electron microscopy image) Credit ETH Zurich / Environmental Chemistry Group Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.