Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2067/42851
Titolo: Isolation and characterization of lignin from beech wood and chestnut sawdust for the preparation of lignin nanoparticles (LNPs) from wood industry side-streams
Autori: Zikeli, Florian
Vinciguerra, Vittorio 
Taddei, Anna Rita
D'Annibale, Alessandro 
Romagnoli, Manuela 
Scarascia Mugnozza, Giuseppe 
Data pubblicazione: 2018
© 2018 Walter de Gruyter GmbH, Berlin/Boston 2018. Lignin was isolated through mild acidolysis from local wood sources such as beech wood and chestnut wood sawdust, a high-volume side product of wood industries. The lignin fractions were characterized by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), Fourier-Transform infrared (FTIR), ultraviolet-visible (UV-Vis) and two-dimensional heteronuclear single-quantum correlation nuclear magnetic resonance (2D HSQC NMR) spectroscopies and size exclusion chromatography (SEC). The Klason lignin (KL) content and polysaccharide composition were determined using traditional methods. Lignin nanoparticles (LNPs) were prepared via a non-solvent method involving dialysis and characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and FTIR and UV-VIS spectroscopies. Semi-porous as well as hollow nanoparticles endowed with a spherical shape were observed. The large majority of the LNPs exhibited an average particle diameter of 90-120 nm. Dynamic light scattering (DLS) analysis showed that both distribution and frequency of dimensional classes of LNPs are clearly affected by the lignin solvent system, i.e. solvent selection governs the size distribution of LNPs.
URI: http://hdl.handle.net/2067/42851
ISSN: 0018-3830
DOI: 10.1515/hf-2017-0208
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