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International Journal of Polymer Science
Volume 2016 (2016), Article ID 1756971, 7 pages
http://dx.doi.org/10.1155/2016/1756971
Research Article

Homogeneous Esterification of Cellulose in the Mixture N-Butylpyridinium Chloride/Dimethylsulfoxide

1Laboratory of Materials Nanomaterials and Environment, Faculty of Sciences, University Mohammed V, Rabat, Morocco
2National Center for Scientific Research and Technique, Rabat, Morocco

Received 9 February 2016; Revised 3 May 2016; Accepted 26 May 2016

Academic Editor: Haisong Qi

Copyright © 2016 Lahcen El Hamdaoui et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present study deals with the homogeneous acylation of cellulose with p-nitrobenzoyl chloride in a reaction medium composed of a mixture of 1-butylpyridinium chloride and dimethylsulfoxide (BPyCl/DMSO), in the presence of different bases and under mild conditions. The preparation of cellulose p-nitrobenzoate depending on the reaction conditions, the influences of reaction parameters such as the base type, and the types of cellulose (kraft and microcrystalline) on the products were investigated. Cellulose p-nitrobenzoate with a degree of substitution (DS) in the range from 0.12 to 1.5 was accessible, with a low excess of reagent and for a short reaction time. The cellulose esters were characterized by 1H-NMR, 13C NMR, and FT-IR spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and solubility tests.