%0 Journal Article
%T Preparation of Lignin Nanoparticles from Wood Waste for Wood Surface Treatment
%A Alessandro DĄŻAnnibale
%A Donatella Capitani
%A Florian Zikeli
%A Giuseppe Scarascia Mugnozza
%A Manuela Romagnoli
%A Vittorio Vinciguerra
%J Archive of "Nanomaterials".
%D 2019
%R 10.3390/nano9020281
%X 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
%K lignin
%K nanoparticles
%K NMR spectroscopy
%K Iroko
%K coatings
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6409744/