Deamination of Polyols from the Glycolysis of Polyurethane.
aromatic amines
chemical recycling
circular economy
glycolysis
polyurethane foam
Journal
Chemistry (Weinheim an der Bergstrasse, Germany)
ISSN: 1521-3765
Titre abrégé: Chemistry
Pays: Germany
ID NLM: 9513783
Informations de publication
Date de publication:
16 Oct 2023
16 Oct 2023
Historique:
received:
16
06
2023
pubmed:
16
10
2023
medline:
16
10
2023
entrez:
16
10
2023
Statut:
aheadofprint
Résumé
Methylenedianiline (MDA) is a secondary, undesired, product of the glycolysis process of polyurethane (PU) scraps due to hydrolysis and pyrolysis side reactions. As an aromatic and carcinogen amine, MDA poses different problems in handling, transporting, and labelling recycled polyols derived from glycolysis, hindering the closure of PU recycling loop. Aiming to provide a solution to this issue, in this work different deaminating agents (DAs) were investigated with the purpose of analyzing their reactivity with MDA. A first part of the study was devoted to the analysis of MDA formation as a function of reaction time and catalyst concentration (potassium acetate) during glycolysis. It was observed that the amount of MDA increases almost linearly with the extent of PU depolymerization and catalyst content. Among the DAs analyzed 2-ethylhexyl glycidyl ether (2-EHGE), and acetic anhydride (Ac
Identifiants
pubmed: 37844012
doi: 10.1002/chem.202301919
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202301919Subventions
Organisme : Fondazione Cassa di Risparmio di Padova e Rovigo
ID : N.A.
Informations de copyright
© 2023 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.
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