Elikagaiak paketatze aktiborako polimeroen gainazal aldaketa

Nowadays biopolymers are replacing the polymers derived from petrochemicals for the packaging industry. Poly- L -isomer of lactic acid (PLLA), blended with ZnO nanoparticles, shows good properties as food packaging material. Among these beneficial features, it should be noted the antibacterial properties. There are a large number of polymers that present antibacterial capacity, but the best capacity is that of chitosan biopolymer. In this work, therefore, surfaces of PLLA-ZnO films were modified in order to improve their antibacterial properties. For this, different modification methods will be studied, such as covalent bonding and electrostatic interactions, and the success of these modifications, as well as the final properties of the films will be analyzed.