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Effect of PHB on the properties of biodegradable PLA blends

  • Zuzana Vanovčanová EMAIL logo , Pavol Alexy , Jozef Feranc , Roderik Plavec , Ján Bočkaj , Leona Kaliňáková , Katarína Tomanová , Dagmara Perďochová , Dávid Šariský and Ivana Gálisová
Published/Copyright: June 25, 2016
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Chemical Papers
From the journal Chemical Papers Volume 70 Issue 10

Abstract

Blends of biodegradable polymers polylactic acid/thermoplastic starch/polyhydroxybutyrate (PLA/TPS/PHB) were prepared using a twin-screw extruder. The TPS content was constant (50 %) and the PHB content in the blends was gradually changed from 0 mass % to 20 mass %. TPS was prepared by melting, where a mixture of native starch, water and glycerol was fed into the twin-screw extruder. Average temperature of extrusion was 180 °C and the concentration of glycerol was 40 mass %. Influence of the PHB concentration in the blend and that of the processing technology on the mechanical and rheological properties of the PLA/PHB composition containing TPS were studied. Mechanical properties were measured 24 h after the film and monofilament preparation and also after the specific storage time to study the effect of storage on the properties. The results indicate that differences in morphology strongly influence the mechanical properties of the studied materials with identical material composition.

Keywords: biodegradable polymers; modification; mechanical properties

Acknowledgements

This work was supported by the Slovak Research and Development Agency (project no. APVV-14-0301).

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Received: 2015-10-6
Revised: 2016-2-16
Accepted: 2016-3-1
Published Online: 2016-6-25
Published in Print: 2016-10-1

© 2016 Institute of Chemistry, Slovak Academy of Sciences

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https://doi.org/10.1515/chempap-2016-0075
Keywords for this article
biodegradable polymers; modification; mechanical properties

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  3. Original Paper
  4. Cloud point extraction of disulfiram for its HPLC-MS/MS determination in synthetic urine
  5. Original Paper
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  7. Original Paper
  8. Possible role of hydrolytic enzymes (Sap, Kex2) in Candida albicans response to aromatic compounds bearing a sulfone moiety
  9. Original Paper
  10. Using nutritional and oxidative stress to increase content of healthbeneficial fatty acids in oleaginous and non-oleaginous yeasts
  11. Original Paper
  12. Fatty acids and amino acids of entomopathogenic fungus Conidiobolus coronatus grown on minimal and rich media
  13. Original Paper
  14. Promotional effect of cobalt addition on catalytic performance of Ce0.5Zr0.5O2 mixed oxide for diesel soot combustion
  15. Original Paper
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  17. Original Paper
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