Issue 23, 2023

A multifunctional lignin-based composite ultra-adhesive for wood processing

Abstract

Phenolic resin adhesives are usually synthesized using phenol and formaldehyde. Both of them are fossil-based and the resins are not biodegradable. Replacing them with whole biomass-based lignin and furfural is attractive. However, it is still difficult to wholly replace them, especially lignin due to its low reactivity. In this paper, a preparation method for a composite adhesive was presented. A lignin-based composite adhesive was prepared by using a deep eutectic solvent (DES), lignin, and furfural. The lignin-based composite adhesive is a machinable adhesive for wood, and the adhesive strength for the paulownia plate reached 5.71 MPa. The adhesive also possessed outstanding flame retardance performance with a V0 grade and the ultimate oxygen index of the adhesive-coated wood was 30%. Interestingly, it also had excellent thermal insulation and photothermal performances. Importantly, wood chips can also be processed into strong regenerated wood using the adhesive.

Graphical abstract: A multifunctional lignin-based composite ultra-adhesive for wood processing

Supplementary files

Article information

Article type
Paper
Submitted
20 Sep 2023
Accepted
06 Nov 2023
First published
09 Nov 2023

Green Chem., 2023,25, 10061-10071

A multifunctional lignin-based composite ultra-adhesive for wood processing

B. Zhan, L. Zhang, Y. Deng and L. Yan, Green Chem., 2023, 25, 10061 DOI: 10.1039/D3GC03542E

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