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Preparation of crosslinked chitosan by electron beam irradiation in the presence of CCl 4
Author(s) -
Ramaprasad A. T.,
Rao Vijayalakshmi,
Praveena M.,
Sanjeev Ganesh,
Ramanani S. P.,
Sabharwal S.
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29076
Subject(s) - chitosan , scanning electron microscope , fourier transform infrared spectroscopy , materials science , nanoindentation , irradiation , polymer chemistry , electron beam processing , chemical engineering , nuclear chemistry , composite material , chemistry , physics , nuclear physics , engineering
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. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009