Abstract
This study aimed at the development of flexible films based on polylactic acid (PLA) incorporated with polyethylene glycol (PEG) and reinforced with MgO nanoparticles using the solvent casting method. The key mechanical, antibacterial and optical properties of the prepared films were investigated for food packaging applications. The 2 wt% PLA/PEG/MgO films showed around 760% improvement in elongation at break when compared to pristine PLA films. Optical properties of PLA films changed significantly with incorporation of PEG and MgO nanoparticles. Furthermore, a remarkable improvement in antibacterial efficacy was demonstrated by the addition of PEG and MgO nanoparticles in comparison to neat PLA films which established PLA/PEG/MgO as a competent packaging film material.
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