To limit the use of solvents in chemistry, new �green� solvents have been studied during these past decades like: the Ionic Liquids (ILs).Chemistry and interactions between cellulose and ionic liquids have been investigated during the past years but mainly for solubilization or homogeneous derivatization of cellulose. The present study reports the heterogeneous surface modification of Nano Fibrillated Cellulose (NFC) in Ionic Liquid using different anhydrides. All the samples were characterized by different FTIR and water contact angle measurements. The surface chemical grafting obtained was effective and the Degree of Substitution (DS) was determined by Elemental Analyses. The four different anhydrides used were compared. The surface modification was checked by X-ray Photoelectron Spectroscopy (XPS) and Secondary Ion Mass Spectroscopy techniques (Tof-SIMS). The ionic liquid used was recycled by liquid-liquid extraction. The purity of the recycled IL was confirmed by FTIR measurements and NMR spectra of 1H, 13C, 31P and 19F.

Surface chemical modification of nanofibrillated cellulose in ionic liquids

243rd National Meeting (2012)

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