Physico-mechanical properties of polylactic acid bio-nanocomposites filled by hybrid nanoparticles

This study is aimed to investigate the effect of simultaneous incorporation cellulose nanocrystals (CNC) and silver nanoparticles (SN) on mechanical, biodegradability, water vapor permeability polylactic acid (PLA)-based films. PLA films their nanocomposites containing different levels CNC (0.333, 1 1.667 phr) SN (0.333 were prepared by solution casting method. was reacted with acetic anhydride improve its compatibility miscibility PLA. Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), tensile test, antibacterial tests employed characterize samples. The biodegradability assessed measuring weight loss upon burial in soil. FTIR spectroscopy confirmed modification nanocrystals. TGA test showed that partial acetylation slightly improved thermal stability CNC. presence increased strength modulus elasticity nanocomposite relative pure acid. samples decreased incorporation. properties higher resistance gram-positive bacteria as cell walls include a peptidoglycan layer.