Synthesis and characterization of sustainable polyurethanes from renewable and recycled feedstocks

Eider Mendiburu-Valor; Tamara Calvo-Correas; Loli Martin; Isabel Harismendy; Cristina Peña-Rodriguez; Arantxa Eceiza

doi:10.1016/j.jclepro.2023.136749

Synthesis and characterization of sustainable polyurethanes from renewable and recycled feedstocks

Eider Mendiburu-Valor, Tamara Calvo-Correas, Loli Martin, Isabel Harismendy, Cristina Peña-Rodriguez, Arantxa Eceiza^*

^*Corresponding author for this work

Sustainable and functional polymers

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

In this paper, sustainable thermoplastic polyurethanes (TPU) were synthesized from a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer obtained by glycolysis of marine polyethylene terephthalate (PET) litter and from a renewable castor oil-derived macrodiol. The BHET was obtained in a closed reactor at 220 °C and a short time reaction of 30 min. The TPUs with different BHET contents, ranging from 10 to 30% by weight, incorporated as chain extenders, were synthesized in bulk without catalysts. In all polyurethanes, the content of the biobased macrodiol was at least 45 wt%. TPUs with commercial BHET have also been synthesized for comparative purposes. The BHET monomer produced and the TPUs synthesized were extensively characterized. The TPUs synthesized in this work, in which at least three quarters of their components are biobased and recycled, showed an interesting combination of thermal, thermomechanical and mechanical properties.

Original language	English
Article number	136749
Journal	Journal of Cleaner Production
Volume	400
DOIs	https://doi.org/10.1016/j.jclepro.2023.136749
Publication status	Published - 10 May 2023

Funding

Financial support from the Basque Government in the framework of Grupos Consolidados ( IT-1690-22 ) and through the ELKARTEK 2021 (Project NEOMAT KK-2021/00059 ) programme is gratefully acknowledged. The University of the Basque Country (UPV/RHU) (GIU18/216 Research Group) is also gratefully acknowledged. The authors would like to thank the Circular Economy University-Company Classroom (Faculty of Engineering Gipuzkoa, UPV/EHU, Provincial Council of Gipuzkoa). We are also grateful to the Macrobehavior-Mesostructure-Nanotechnology SGIker unit of UPV/EHU. E.Mendiburu-Valor would like to thank the Basque Government for the PhD grant ( PRE_2018_1_0014 ). Financial support from the Basque Government in the framework of Grupos Consolidados (IT-1690-22) and through the ELKARTEK 2021 (Project NEOMAT KK-2021/00059) programme is gratefully acknowledged. The University of the Basque Country (UPV/RHU) (GIU18/216 Research Group) is also gratefully acknowledged. The authors would like to thank the Circular Economy University-Company Classroom (Faculty of Engineering Gipuzkoa, UPV/EHU, Provincial Council of Gipuzkoa). We are also grateful to the Macrobehavior-Mesostructure-Nanotechnology SGIker unit of UPV/EHU. E.Mendiburu-Valor would like to thank the Basque Government for the PhD grant (PRE_2018_1_0014).

Funders	Funder number
Circular Economy University-Company Classroom
RHU	GIU18/216
Eusko Jaurlaritza	IT-1690-22, NEOMAT KK-2021/00059, PRE_2018_1_0014
Euskal Herriko Unibertsitatea
Diputación Foral de Gipuzkoa

Keywords

Glycolysis
PET marine Litter
Recycled BHET
Renewable macrodiol
Sustainable polyurethane

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jclepro.2023.136749

Cite this

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title = "Synthesis and characterization of sustainable polyurethanes from renewable and recycled feedstocks",

abstract = "In this paper, sustainable thermoplastic polyurethanes (TPU) were synthesized from a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer obtained by glycolysis of marine polyethylene terephthalate (PET) litter and from a renewable castor oil-derived macrodiol. The BHET was obtained in a closed reactor at 220 °C and a short time reaction of 30 min. The TPUs with different BHET contents, ranging from 10 to 30% by weight, incorporated as chain extenders, were synthesized in bulk without catalysts. In all polyurethanes, the content of the biobased macrodiol was at least 45 wt%. TPUs with commercial BHET have also been synthesized for comparative purposes. The BHET monomer produced and the TPUs synthesized were extensively characterized. The TPUs synthesized in this work, in which at least three quarters of their components are biobased and recycled, showed an interesting combination of thermal, thermomechanical and mechanical properties.",

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AU - Peña-Rodriguez, Cristina

AU - Eceiza, Arantxa

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N2 - In this paper, sustainable thermoplastic polyurethanes (TPU) were synthesized from a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer obtained by glycolysis of marine polyethylene terephthalate (PET) litter and from a renewable castor oil-derived macrodiol. The BHET was obtained in a closed reactor at 220 °C and a short time reaction of 30 min. The TPUs with different BHET contents, ranging from 10 to 30% by weight, incorporated as chain extenders, were synthesized in bulk without catalysts. In all polyurethanes, the content of the biobased macrodiol was at least 45 wt%. TPUs with commercial BHET have also been synthesized for comparative purposes. The BHET monomer produced and the TPUs synthesized were extensively characterized. The TPUs synthesized in this work, in which at least three quarters of their components are biobased and recycled, showed an interesting combination of thermal, thermomechanical and mechanical properties.

AB - In this paper, sustainable thermoplastic polyurethanes (TPU) were synthesized from a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer obtained by glycolysis of marine polyethylene terephthalate (PET) litter and from a renewable castor oil-derived macrodiol. The BHET was obtained in a closed reactor at 220 °C and a short time reaction of 30 min. The TPUs with different BHET contents, ranging from 10 to 30% by weight, incorporated as chain extenders, were synthesized in bulk without catalysts. In all polyurethanes, the content of the biobased macrodiol was at least 45 wt%. TPUs with commercial BHET have also been synthesized for comparative purposes. The BHET monomer produced and the TPUs synthesized were extensively characterized. The TPUs synthesized in this work, in which at least three quarters of their components are biobased and recycled, showed an interesting combination of thermal, thermomechanical and mechanical properties.

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Synthesis and characterization of sustainable polyurethanes from renewable and recycled feedstocks

Abstract

Funding

Keywords

UN SDGs

Access to Document

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