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Thermoplastic starch/polyester films: Effects of extrusion process and poly (lactic acid) addition
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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Metadata
- Authors
- Shirai, M. A., Olivato, J. B., Garcia, P. S., Müller, C. M. O., Grossmann, M. V. E., & Yamashita, F.
- Affiliations
- Universidade Estadual de Londrina (BR)
- Corresponding author
- Shirai, Marianne Ayumi
- ORCID
- Venue
- Materials Science and Engineering: C
- Publisher
- Elsevier BV
- Published
- 2013-10
- Volume
- 33
- Issue
- 7
- Pages
- 4112-4117
- ISSN
- 0928-4931 (ISSN-L)
- OpenAlex
- W2033083938
- Cited by
- 69
- References
- 23
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 1 · 2023: 7 · 2022: 12 · 2021: 4 · 2020: 7 · 2019: 6 · 2018: 6 · 2017: 6 · 2016: 6 · 2015: 4 · 2014: 1
- FWCI
- 1.40
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Materials Science and Engineering C (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação Araucária
- Topics
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Materials Science › Biomaterials › Nanocomposite Films for Food Packaging
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Keywords
- thermoplastic starch, poly(butylene adipate-co-terephthalate), polylactic acid, biodegradable films, polymer blends, cassava starch, water vapor permeability, viscoelasticity, mechanical properties, polymer incompatibility, film morphology
- MeSH terms
- Elasticity, Humidity, Microscopy, Electron, Scanning, Permeability, Polyesters, Polymers, Starch, Steam, Temperature, Viscosity, Lactic Acid
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