opening polymerization of lactide or by polycondensation
of lactic acid monomers. The monomer is obtained from the
fermentation of corn or other renewable agricultural raw
material [8,9]. Poor thermal and mechanical resistance and
limited gas barrier properties compared to petroleumbased
polymers are the main limitations for the application
of PLA in packaging [10,11]. The above drawbacks could
be overcome by enhancing their thermo-mechanical
properties through copolymerization, blending and filling
techniques. Combining synthetic PLA with natural polymers
such as cellulose and starch is a suitable strategy for
cost reduction and improvement of combined properties.