Abstract In this study, bionanocomposite films based on poly(lactide) (PLA) plasticised with poly(ethylene glycol) (PEG) (7.5 wt%) and reinforced various contents of nanofibrillated cellulose (NFC) (1, 3, 5 were prepared. The hydrothermal degradation was investigated through immersion in several aqueous environments at temperatures 8, 23, 58, 70 °C as a function time (7, 15, 30, 60, 90 days). e...