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

27 Citations (Scopus)

5 Downloads (Pure)

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

UN SDGs

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

SDG 14 Life Below Water

Keywords

Glycolysis
PET marine Litter
Recycled BHET
Renewable macrodiol
Sustainable polyurethane

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10.1016/j.jclepro.2023.136749

Synthesis and characterizationFinal published version, 1.91 MBLicence: CC BY-NC-ND

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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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author = "Eider Mendiburu-Valor and Tamara Calvo-Correas and Loli Martin and Isabel Harismendy and Cristina Pe{\~n}a-Rodriguez and Arantxa Eceiza",

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year = "2023",

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AU - Mendiburu-Valor, Eider

AU - Calvo-Correas, Tamara

AU - Martin, Loli

AU - Harismendy, Isabel

AU - Peña-Rodriguez, Cristina

AU - Eceiza, Arantxa

PY - 2023/5/10

Y1 - 2023/5/10

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.

KW - Glycolysis

KW - PET marine Litter

KW - Recycled BHET

KW - Renewable macrodiol

KW - Sustainable polyurethane

UR - https://www.scopus.com/pages/publications/85150766226

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DO - 10.1016/j.jclepro.2023.136749

M3 - Article

AN - SCOPUS:85150766226

SN - 0959-6526

VL - 400

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

M1 - 136749

ER -

Synthesis and characterization of sustainable polyurethanes from renewable and recycled feedstocks

Abstract

UN SDGs

Keywords

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