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Biaxial Orientation of Polylactide/Thermoplastic Starch Blends

  • N. Chapleau , M. A. Huneault und H. Li
Veröffentlicht/Copyright: 6. April 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 22 Heft 5

Abstract

The biaxial stretchability and film properties of polylactide/thermoplastic starch blends were investigated. Polylactide (PLA) and thermoplastic starch (TPS) were blended in various proportions. Blends containing 27, 42 and 60 wt.% TPS were prepared via a twin-screw extrusion process. Interfacial modification was performed by grafting the PLA with maleic anhydride. These blends were subsequently cast into sheets and biaxially drawn using a laboratory biaxial stretcher. The morphology of extruded strands and cast sheets was investigated using scanning electron microscopy. The compatibilized blends exhibited a much finer morphology as well as preferential minor phase size orientation along the machine direction. The addition of starch did not affect significantly the biaxial stretchability of the pure PLA. Even at high starch content (60 wt.%), the biaxial draw ratio at which the sample breaks is very similar to that of the pure PLA. At higher temperatures, all blends could be stretched at significantly much higher biaxial draw ratio and very thin films could be obtained. The starch content and processing variables affected the tensile properties.

∗ Mail address: Nathalie Chapleau, Industrial Materials Institute – National Research Council of Canada, 75, de Mortagne, Boucherville, QC, J4B 6Y4, Canada. E-mail:

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Received: 2007-5-4
Accepted: 2007-7-25
Published Online: 2013-04-06
Published in Print: 2007-12-01

© 2007, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Special Issue on Biobased Polymers
  5. Invited Papers
  6. Crystallization and Mechanical Propertiesof Poly (D, L) Lactide-based Blown Films
  7. Rheological Behavior and Modeling of Thermal Degradation of Poly(∊-Caprolactone) and Poly(L-Lactide)
  8. Rheological Evaluation and Observations of Extrusion Instabilities of Biodegradable Polyesters
  9. Biaxial Orientation of Polylactide/Thermoplastic Starch Blends
  10. Effects of Starch Types on Mechanical Properties of Poly(lactic acid)/Starch Composites
  11. Solid and Microcellular Polylactide-Carbon Nanotube Nanocomposites
  12. Tapioca Starch-poly (lactic acid)-based Nanocomposite Foams as Affected by Type of Nanoclay
  13. Injection Molded Solid and Microcellular Polylactide Compounded with Recycled Paper Shopping Bag Fibers
  14. Fabrication of Porous 3-D Structure from Poly(L-lactide)-based Nanocomposite Foam via Enzymatic Degradation
  15. The Linear Viscoelastic Behavior of a Series of 3-Hydroxybutyrate-based Copolymers
  16. New Developments in Biodegradable Starch-based Nanocomposites
  17. Viscous Properties of Thermoplastic Starches from Different Botanical Origin
  18. Thermoplastic Foams from Zein and Gelatin
  19. Improvement of the Mechanical Properties of Soy Protein Isolate Based Plastics through Formulation and Processing
  20. Biocomposites Based on Bacterial Cellulose and Apple and Radish Pulp
  21. Preparation and Properties of Metallocene-catalyzed PE/Starch Nanocomposites: Role of Nanocompatibilizer
  22. Evaluation of Properties and Biodeterioration Potential of Polyethylene and Aliphatic Polyester Blends
  23. PPS News
  24. PPP News
  25. Seikei-Kakou Abstracts
  26. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.2070

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Special Issue on Biobased Polymers
  5. Invited Papers
  6. Crystallization and Mechanical Propertiesof Poly (D, L) Lactide-based Blown Films
  7. Rheological Behavior and Modeling of Thermal Degradation of Poly(∊-Caprolactone) and Poly(L-Lactide)
  8. Rheological Evaluation and Observations of Extrusion Instabilities of Biodegradable Polyesters
  9. Biaxial Orientation of Polylactide/Thermoplastic Starch Blends
  10. Effects of Starch Types on Mechanical Properties of Poly(lactic acid)/Starch Composites
  11. Solid and Microcellular Polylactide-Carbon Nanotube Nanocomposites
  12. Tapioca Starch-poly (lactic acid)-based Nanocomposite Foams as Affected by Type of Nanoclay
  13. Injection Molded Solid and Microcellular Polylactide Compounded with Recycled Paper Shopping Bag Fibers
  14. Fabrication of Porous 3-D Structure from Poly(L-lactide)-based Nanocomposite Foam via Enzymatic Degradation
  15. The Linear Viscoelastic Behavior of a Series of 3-Hydroxybutyrate-based Copolymers
  16. New Developments in Biodegradable Starch-based Nanocomposites
  17. Viscous Properties of Thermoplastic Starches from Different Botanical Origin
  18. Thermoplastic Foams from Zein and Gelatin
  19. Improvement of the Mechanical Properties of Soy Protein Isolate Based Plastics through Formulation and Processing
  20. Biocomposites Based on Bacterial Cellulose and Apple and Radish Pulp
  21. Preparation and Properties of Metallocene-catalyzed PE/Starch Nanocomposites: Role of Nanocompatibilizer
  22. Evaluation of Properties and Biodeterioration Potential of Polyethylene and Aliphatic Polyester Blends
  23. PPS News
  24. PPP News
  25. Seikei-Kakou Abstracts
  26. Seikei-Kakou Abstracts
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