Bıobased/ Bıodegradable/ Compostable / Antıbacterial Polymeric Mulching And Food Packagıng Films

Abstract

In this thesis, novel biobased biodegradable compostable antibacterial St-g-PLA copolymers and St-g-PLA organoclay nanocomposites were fabricated by using different green methods applying as a food packaging and mulching films. The development of new methods for graft copolymerization of L-lactic acid onto starch were evaluated for the first time in the literature for this kind of monomers, such as supercritical carbon dioxide media, microwave irradiation, shear mixing method, and reactive extrusion without using toxic solvents and investigation of the St-g-PLA based film properties. Chemical and physical structures, thermal behavior and morphology of synthesized copolymers and nanocomposites, as well as some parameters were performed by FTIR and ¹³C CP MAS NMR spectroscopy, MALDI-TOF-MS, XRD, TGA DTG and SEM TEM, respectively. The film extrusion in a lab-scale was carried out by using a twin-screw extruder equipped by a film extrusion die, blowing unit and rotating film-uptake.