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Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde

(MGG’) resin adhesives for bonding wood panels were prepared by a single step procedure, namely reacting melamine with glyoxal and simultaneously with a much smaller proportion of glutaraldehyde. No formaldehyde was used. The inherent slow hardening of this resin was overcome by the addition of N-me...

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Autores principales: Xi, Xuedong, Pizzi, Antonio, Amirou, Siham
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415189/
https://www.ncbi.nlm.nih.gov/pubmed/30966056
http://dx.doi.org/10.3390/polym10010022
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author Xi, Xuedong
Pizzi, Antonio
Amirou, Siham
author_facet Xi, Xuedong
Pizzi, Antonio
Amirou, Siham
author_sort Xi, Xuedong
collection PubMed
description (MGG’) resin adhesives for bonding wood panels were prepared by a single step procedure, namely reacting melamine with glyoxal and simultaneously with a much smaller proportion of glutaraldehyde. No formaldehyde was used. The inherent slow hardening of this resin was overcome by the addition of N-methyl-2-pyrrolidone hydrogen sulphate ionic liquid as the adhesive hardener in the glue mix. The plywood strength results obtained were comparable with those obtained with melamine–formaldehyde resins pressed under the same conditions. Matrix assisted laser desorption ionisation time of flight (MALDI ToF) and Fourier transform Infrared (FTIR) analysis allowed the identification of the main oligomer species obtained and of the different types of linkages formed, as well as to indicate the multifaceted role of the ionic liquid. These resins are proposed as a suitable substitute for equivalent formaldehyde-based resins.
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spelling pubmed-64151892019-04-02 Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde Xi, Xuedong Pizzi, Antonio Amirou, Siham Polymers (Basel) Article (MGG’) resin adhesives for bonding wood panels were prepared by a single step procedure, namely reacting melamine with glyoxal and simultaneously with a much smaller proportion of glutaraldehyde. No formaldehyde was used. The inherent slow hardening of this resin was overcome by the addition of N-methyl-2-pyrrolidone hydrogen sulphate ionic liquid as the adhesive hardener in the glue mix. The plywood strength results obtained were comparable with those obtained with melamine–formaldehyde resins pressed under the same conditions. Matrix assisted laser desorption ionisation time of flight (MALDI ToF) and Fourier transform Infrared (FTIR) analysis allowed the identification of the main oligomer species obtained and of the different types of linkages formed, as well as to indicate the multifaceted role of the ionic liquid. These resins are proposed as a suitable substitute for equivalent formaldehyde-based resins. MDPI 2017-12-24 /pmc/articles/PMC6415189/ /pubmed/30966056 http://dx.doi.org/10.3390/polym10010022 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xi, Xuedong
Pizzi, Antonio
Amirou, Siham
Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde
title Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde
title_full Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde
title_fullStr Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde
title_full_unstemmed Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde
title_short Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde
title_sort melamine–glyoxal–glutaraldehyde wood panel adhesives without formaldehyde
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415189/
https://www.ncbi.nlm.nih.gov/pubmed/30966056
http://dx.doi.org/10.3390/polym10010022
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