| Title |
Thermoset polyurethanes from biobased and recycled components |
| ID_Doc |
26228 |
| Authors |
Mendiburu-Valor, E; Larraza, I; Echeverria-Altuna, O; Harismendy, I; Pena-Rodriguez, C; Eceiza, A |
| Title |
Thermoset polyurethanes from biobased and recycled components |
| Year |
2023 |
| Published |
Journal Of Polymers And The Environment, 31, 11 |
| DOI |
10.1007/s10924-023-02891-1 |
| Abstract |
In this work, a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer, obtained by glycolysis of marine polyethylene terephthalate (PET) litter, and a biobased polyol derived from castor oil were used for the synthesis of thermoset polyurethanes (PUs). BHET was obtained in a closed reactor at 220 degrees C and a short reaction time of 30 min. Different PUs were synthesized, varying the BHET content, ranging from 0 to 21 wt% and varying the polyol content, obtaining a renewable carbon content between 23 and 43%. The PUs synthesized in this work, in which at least 40% of their components are renewable and recycled, showed an interesting combination of thermal, thermo-mechanical and mechanical properties. In addition, a preliminary chemical recycling study of the synthesized PUs was performed to evaluate their recyclability, wrapping the whole process within the circular economy. The obtained glycolyzed product was a single-phase viscous liquid consisting on polyol-rich and BHET-rich fractions, with contents in the range of those employed in the synthesis of PUs. |
| Author Keywords |
Thermoset polyurethane; Recycled BHET; Biobased polyol; Circularity; Glycolysis |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001000587400001 |
| WoS Category |
Engineering, Environmental; Polymer Science |
| Research Area |
Engineering; Polymer Science |
| PDF |
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