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Tosylcellulose synthesis in aqueous medium

Abstract : p-Toluenesulfonyl cellulose was prepared by reacting cellulose in aqueous medium, instead of via traditional routes, which involve the use of DMAc/LiCl, or more recently, ionic liquids. The influence of several parameters on the reaction efficiency has been studied; amount of tosylchloride, presence of triethylamine, reaction time and use of sodium hydroxide or sodium chloride. The resulting p-toluenesulfonyl cellulose samples were characterized by means of FTIR and NMR spectroscopy. The effects of solvent on the crystalline change during tosylation were investigated by X-ray diffraction (XRD). The degree of substitution (DS) was determined by 1H NMR and confirmed by X-ray photoelectron spectroscopy (XPS). Tosylcelluloses with DS from 0.1 to 1.7 have been prepared.
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Soumis le : jeudi 23 janvier 2014 - 18:51:30
Dernière modification le : vendredi 5 août 2022 - 14:54:00



Pierre-Henri Elchinger, Pierre-Antoine Faugeras, Chouki Zerrouki, Daniel Montplaisir, François Brouillette, et al.. Tosylcellulose synthesis in aqueous medium. Green Chemistry, 2012, 14 (11), pp.3126-3131. ⟨10.1039/c2gc35592b⟩. ⟨hal-00935686⟩



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