Impact of microcrystalline cellulose extracted from walnut and apricots shells on the biodegradability of Poly (lactic acid)

In this work, various microcrystalline celluloses were extracted from apricots shells (AC) and walnut (WC) by alkaline treatments combined with hydrogen peroxide blanching. Different composites-based poly (lactic acid) (PLA) cellulose PLA/AC PLA/WC successfully prepared the cast-solution method ratios. PLA composites characterized tensile test, Fourier transform infrared spectroscopy (FTIR), melt flow index (MFI), thermo gravimetric analysis (TGA), differential scanning calorimetry (DSC) electron microscopy (SEM). Results showed an increase in Young’s modulus 802.6 MPa to 1412.9 (10% AC) 1145,6 (7% WC) composites. A decrease degradation temperature was recorded increasing percentage 354°C 328°C (PLA/10% 339°C WC). An enhancement crystallinity rate observed after incorporation of 30.42% 37.97% (PLA/7% 38.47% AC). Furthermore, biodegradation evaluated a soil burial test. loss weights 38% WC), 13% 14% obtained 12 months within Finally, presence MCC matrix at 7% content exhibited best mechanical properties, crystalline structure biodegradability rate.