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Utilization of Natural Oils for Decomposition of Polyurethanes |
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| Authors: | Hynek Beneš Renáta Černá Andrea Ďuračková Petra Látalová |
| Affiliation: | (1) Department of Polymer Processing, Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague, 6, Czech Republic;(2) Institute for Environmental Studies, Faculty of Science, Charles University, Albertov 6, 120 00 Prague 2, Czech Republic;(3) Department of Polymer Gels, Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic;(4) Department of Controlled Polymer Synthesis, Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic |
| Abstract: | The model polyurethane foam and model compact polyurethane material were prepared and then decomposed by means of natural oils. Castor oil and fish oil based polyol were used in this study. Optimal conditions for the polyurethane decomposition were found. Temperature 250 °C was necessary for efficient polyurethane decomposition by castor oil whereas 200 °C is sufficient in the case of fish oil based polyol. Prepared products have hydroxyl number in the range of 95–168 mg KOH g−1. During the polyurethane decomposition no cleavage of double bonds in the fatty acid chains of castor oil and fish oil based polyol was observed. |
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