| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10614594 | Materials Science and Engineering: C | 2013 | 6 Pages |
Abstract
Biodegradable films were produced using the blown extrusion method from blends that contained cassava thermoplastic starch (TPS), poly(butylene adipate-co-terephthalate) (PBAT) and poly(lactic acid) (PLA) with two different extrusion processes. The choice of extrusion process did not have a significant effect on the mechanical properties, water vapor permeability (WVP) or viscoelasticity of the films, but the addition of PLA decreased the elongation, blow-up ratio (BUR) and opacity and increased the elastic modulus, tensile strength and viscoelastic parameters of the films. The films with 20% PLA exhibited a lower WVP due to the hydrophobic nature of this polymer. Morphological analyses revealed the incompatibility between the polymers used.
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Authors
Marianne Ayumi Shirai, Juliana Bonametti Olivato, PatrÃcia Salomão Garcia, Carmen Maria Olivera Müller, Maria Victória Eiras Grossmann, Fabio Yamashita,