Abstract
The graft copolymerization of butyl acrylate (BA) onto chitosan was tried via a new protection-graft-deprotection procedure. About 6-O-maleoyl-N-phthaloyl-chitosan was synthesized and characterized by Fourier transform infrared spectra analysis (FT-IR) and 1H-NMR. Because the intermediate 6-O-maleoyl-N-phthaloyl-chitosan was soluble in organic solvents, the graft copolymerization was carried out in a homogeneous system. Grafting was initiated by γ-irradiation. The graft extent was dependent on the irradiation dose and the concentration of BA monomer, and copolymers with grafting above 100% were readily prepared. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 489–493, 2006
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