Issue 2, 2021

HMF–glycerol acetals as additives for the debonding of polyurethane adhesives

Abstract

Diols prepared via solvent-free acetalisation of hydroxymethylfurfural with glycerol were incorporated as additives into polyurethanes based on a bioderived polyether polyol. Moisture-cured as well as acrylate cross-linked films of these PUs were prepared. Both materials displayed excellent thermal stability and could be cleaved in acidic solutions. In particular the highly cross-linked film produced from the acrylate endcapped polyurethanes displayed a clear tuneability of the degradation behaviour according to the amount of acetal additive incorporated. This system has the potential to be used for the selective debonding of polyurethane-based adhesives at the end of their lifetime to facilitate the recycling of expensive components and raw materials from complex devices such as consumer electronics.

Graphical abstract: HMF–glycerol acetals as additives for the debonding of polyurethane adhesives

Supplementary files

Article information

Article type
Paper
Submitted
02 Des 2020
Accepted
14 Des 2020
First published
14 Des 2020

Green Chem., 2021,23, 957-965

HMF–glycerol acetals as additives for the debonding of polyurethane adhesives

S. Kirchhecker, A. Dell'Acqua, A. Angenvoort, A. Spannenberg, K. Ito, S. Tin, A. Taden and J. G. de Vries, Green Chem., 2021, 23, 957 DOI: 10.1039/D0GC04093B

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