Author:
Mendiburu-Valor Eider,Larraza Izaskun,Echeverria-Altuna Oihane,Harismendy Isabel,Peña-Rodriguez Cristina,Eceiza Arantxa
Abstract
AbstractIn 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 °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.
Funder
Eusko Jaurlaritza
Euskal Herriko Unibertsitatea
Universidad del País Vasco
Publisher
Springer Science and Business Media LLC
Subject
Materials Chemistry,Polymers and Plastics,Environmental Engineering
Cited by
3 articles.
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