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Preparation of crosslinked chitosan by electron beam irradiation in the presence of CCl4

✍ Scribed by A. T. Ramaprasad; Vijayalakshmi Rao; M. Praveena; Ganesh Sanjeev; S. P. Ramanani; S. Sabharwal

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
316 KB
Volume
111
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

In this article, we report the synthesis of crosslinked chitosan using 8 MeV electron beam (EB) irradiation in the presence of carbon tetrachloride. The crosslinked chitosan is characterized by dissolution, Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning colorimetry (DSC), and nanoindentation studies. The insolubility of irradiated films in acetic acid indicates that chitosan has undergone crosslinking reaction. FTIR analysis also confirms the crosslinked structure of chitosan. Mechanical properties such as elastic modulus and hardness are calculated from the nanoindentation data. Modulus and hardness of chitosan increase with increase in the irradiation dose due to the increase in the crosslinking. Β© 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

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