PREPARATION AND CHARACTERIZATION OF FILMS BIODEGRADABLE TPS EVA BLEND

Biodegradable polymers are promising polymers that are of interest to global packaging and film manufacturers, but currently these polymers have limitations in terms of solubility, mechanical resistance, and water vapor permeability. An alternative is the addition of synthetic polymers that improve the properties of such materials. The objective of this wowas to develop a blend of ethyl vinyl acetate (EVA) with TPS thermoplastic starch in different compositions. To obtain a better understanding of the microstructure and barrier properties, the blends were characterized by scanning electron microscopy (SEM) and water vapor permeability (WVP), infrared spectroscopy (FTIR-ATR), and thermogravimetry (TGA),the results show that there is good interaction between TPS and EVA, and the maintenance of EVAs WVP even with the addition of TPS. Showing a promising alternative to the mixture for covering films.