Title of article
Thermoplastic starch/polyester films: Effects of extrusion process and poly (lactic acid) addition
Author/Authors
Shirai، نويسنده , , Marianne Ayumi and Olivato، نويسنده , , Juliana Bonametti and Garcia، نويسنده , , Patrيcia Salomمo and Müller، نويسنده , , Carmen Maria Olivera and Grossmann، نويسنده , , Maria Victَria Eiras and Yamashita، نويسنده , , Fabio، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
6
From page
4112
To page
4117
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.
Keywords
Biodegradable film , Viscoelasticity , Blown extrusion , water vapor permeability , mechanical properties
Journal title
Materials Science and Engineering C
Serial Year
2013
Journal title
Materials Science and Engineering C
Record number
2103506
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