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Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde

Abstract : (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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https://hal.univ-lorraine.fr/hal-03110791
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Submitted on : Thursday, January 14, 2021 - 7:34:43 PM
Last modification on : Tuesday, May 10, 2022 - 3:40:45 AM

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Xuedong Xi, Antonio Pizzi, Siham Amirou. Melamine–Glyoxal–Glutaraldehyde Wood Panel Adhesives without Formaldehyde. Polymers, 2018, 10 (1), pp.22. ⟨10.3390/polym10010022⟩. ⟨hal-03110791⟩

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