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Volume 66, Issue 9

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Biodegradable polyhydroxybutyrate as a polyol for elastomeric polyurethanes

Lucy Vojtová
  • CEITEC — Central European Institute of Technology, Brno University of Technology, Technická 3058/10, 616 00, Brno, Czech Republic
  • Institute of Materials Chemistry, Faculty of Chemistry, University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic
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/ Vojtěch Kupka
  • Institute of Materials Chemistry, Faculty of Chemistry, University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic
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/ Jan Žídek
  • CEITEC — Central European Institute of Technology, Brno University of Technology, Technická 3058/10, 616 00, Brno, Czech Republic
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/ Jaromír Wasserbauer
  • Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic
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/ Petr Sedláček
  • Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic
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/ Josef Jančář
  • CEITEC — Central European Institute of Technology, Brno University of Technology, Technická 3058/10, 616 00, Brno, Czech Republic
  • Institute of Materials Chemistry, Faculty of Chemistry, University of Technology, Purkyňova 118, 612 00, Brno, Czech Republic
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Published Online: 2012-06-22 | DOI: https://doi.org/10.2478/s11696-012-0176-9

Abstract

In the proposed work, new elastomeric bio-polyol based polyurethanes (bio-PUs) with specific mechanical properties were prepared by a one-shot process without the presence of a solvent. Commercial non-degradable polyether polyol derived from petrochemical feed stock was partly (in the amount of 1 mass %, 5 mass %, and 10 mass %) substituted by the biodegradable polyhydroxybutyrate (PHB). Morphology of elastomeric PU composites was evaluated by scanning electron microscopy and mechanical properties of the prepared samples were obtained by both tensile measurements and prediction via the Mooney-Rivlin equation. Electron microscopy proved that the prepared materials have the character of a particle filled composite material, where PHB particles are regular with their size of about 1–2 μm in diameter. Tensile measurements demonstrated that the Young’s modulus, tensile stress at break, and tensile strain at break of each sample increase with the increase of the volume fraction of the filler. From the measured stress-strain data, the first and the second term of the Mooney-Rivlin equation were calculated. The obtained constants were applied to recalculate the stress-strain curves. It was found that the Mooney-Rivlin equation corresponds well with the stress-strain behavior of the prepared specimens.

Keywords: polyurethanes; elastomers; biodegradable; poly(hydroxybutyrate); simulation; Mooney-Rivlin equation

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About the article

Published Online: 2012-06-22

Published in Print: 2012-09-01


Citation Information: Chemical Papers, Volume 66, Issue 9, Pages 869–874, ISSN (Online) 1336-9075, DOI: https://doi.org/10.2478/s11696-012-0176-9.

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© 2012 Institute of Chemistry, Slovak Academy of Sciences.

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