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Title: | Preparation of Lignin Nanoparticles from Wood Waste for Wood Surface Treatment | Authors: | Zikeli, Florian Vinciguerra, Vittorio D'Annibale, Alessandro Capitani, Donatella Romagnoli, Manuela Scarascia Mugnozza, Giuseppe |
Journal: | NANOMATERIALS | Issue Date: | 2019 | Abstract: | Lignin was isolated from wood wastes comprising Iroko sawdust (IR) and mixed sawdust from Iroko and Norway spruce (IRNS), furnished by a local wood houses producer. The respective acidolysis lignin fractions were structurally characterized using pyrolysis (Py)-GCMS, two-dimensional heteronuclear single quantum correlation nuclear magnetic resonance (2D HSQC NMR), Fourier-transform infrared FTIR and ultraviolet-visible (UV-VIS) spectroscopies, size exclusion chromatography, and standard wet-chemistry methods for Klason lignin and polysaccharides determination. The isolated lignin fractions were subsequently used for the preparation of lignin nanoparticles (LNPs) using a non-solvent method. LNPs were then used for wood surface treatment using a dip-coating technique. The coated wood samples were analyzed by colorimetry and scanning electron microscopy (SEM) before and after artificial weathering experiments in a UV chamber to investigate the UV protection potential of the LNPs coatings. Wood samples dip-coated with LNPs showed promising surface modifications resembling a sort of film of fused LNPs. Coatings made from IR-LNPs and IRNS-LNPs performed significantly better in artificial weathering experiments than uncoated reference samples. |
URI: | http://hdl.handle.net/2067/43008 | ISSN: | 2079-4991 | DOI: | 10.3390/nano9020281 | Rights: | Attribution 4.0 International |
Appears in Collections: | A1. Articolo in rivista |
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