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Journal of Chemistry
Volume 2013, Article ID 982638, 8 pages
http://dx.doi.org/10.1155/2013/982638
Research Article

Synthesis and Physicochemical Characterization of Chitin Derivatives

1Department of Chemistry, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey
2Faculty of Technical Education, Batman University, 72100 Batman, Turkey

Received 10 February 2012; Revised 24 July 2012; Accepted 25 July 2012

Academic Editor: José M. G. Martinho

Copyright © 2013 İlhan Uzun and Giray Topal. 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

Firstly, chitin derivatives were synthesized. For this purpose, chitin was modified via ring-opening reaction with cyclic anhydrides in lithium chloride/N,N-dimethylacetamide. Then, chitin derivatives synthesized were characterized by FTIR, 1H NMR, 13C NMR, and U-Vis spectroscopies and scanning electron microscopy. Thermogravimetric analysis was performed to investigate the thermal stability of chitin derivatives. Thermogravimetric analysis results showed that chitin modified with trimellitic anhydride is thermally more stable than chitin modified with phthalic anhydride. In addition, the electrical conductivity of chitin modified with phthalic anhydride and trimellitic anhydride was also measured. Electrical conductivity measurement results showed that the electrical conductivity of chitin modified with trimellitic anhydride ( 1 . 2 × 1 0 4  S cm−1) is higher than that of chitin modified with phthalic anhydride ( 9 . 2 × 1 0 5  S cm−1).